Pagina 2 - I migliori medici di Chirurgia per l'alluce valgo - TOP-65medici

Responsabile dell'Ortopedia presso il Carolina Medical Center – specializzato in trattamenti complessi del sistema muscolo-scheletrico, inclusa l'artroscopia dell'anca, una competenza rara tra gli ortopedici polacchi.

• Dirige il Dipartimento di Ortopedia, Traumatologia e Medicina dello Sport
• Specializzato in trapianto di menisco e ricostruzione della cartilagine
• Ex consulente ortopedico per il club calcistico Legia
• Esperto in ricostruzione multi-legamentosa e osteotomie

Il Prof. Dr. Gursel Saka è specializzato in procedure ortopediche complesse, tra cui interventi chirurgici alla colonna vertebrale, traumi e artroplastica, presso l'Hisar Hospital Intercontinental.

• Esperto in chirurgia spinale e casi di trauma
• Esegue procedure avanzate di artroplastica
• Finalista per i Tubitak XI Technology Awards
• Professore associato presso l'Università delle Scienze della Salute

Dal 1993, il Dr. Komor si è specializzato in chirurgia ortopedica con un focus sulle patologie del piede e della caviglia, compreso l'alluce valgo. Integra tecniche avanzate come la terapia con cellule staminali.

• Ha ricevuto l'EFORT Traveling Fellowship in Belgio
• Formazione internazionale in Israele, USA, Spagna e Austria
• Ha praticato chirurgia ortopedica in Spagna per 7 anni
• Specializzato in trattamenti di piede, caviglia, ginocchio e spalla

Dr. Mehmet Aydogan is a specialist in Orthopedics, Traumatology, and Spine Surgery at Memorial Şişli Hospital. He worked in Spine Surgery there in 2024–2025 and has been in Orthopedics since 2026. He previously led the Orthopedic Surgery, Traumatology & Advanced Spine Surgery Center at Emsey Hospital (2018–2022). His experience includes the EURO SPINE Surgical Spine Center of Excellence in Switzerland (2022–2024) and a research fellowship at the UCLA Comprehensive Spine Center (2009–2011). He also held posts at Boğaziçi Spine Center, Medical Park Göztepe, and Florence Nightingale.

Education: MD, Ege University (1990–1996). Residency in Orthopedics and Traumatology at Dr. Lütfi Kırdar Kartal TRH (2000–2004). Publications: 50 journal articles and 37 presentations.

Memberships: TTB, TOTBİD, Turkish Spine Society, MINOD, NASS, SRS, European Spine Society, and APSS.

Specializzato in disfunzioni muscoloscheletriche, incluso l'alluce valgo, con vasta esperienza presso il Carolina Medical Center dal 2010.

• Lavora con atleti e bambini a partire dall'età di 3 anni
• Assistente senior presso la Clinica di Chirurgia della Mano a Łódź
• Partecipa regolarmente a conferenze e corsi di formazione internazionali

Specializzato in interventi chirurgici ortopedici, inclusa la correzione dell'alluce valgo, con un focus unico sugli atleti e tecniche di recupero rapido.

• 7 anni di esperienza con squadre sportive, garantendo trattamenti su misura
• Formazione avanzata in chirurgia traumatologica presso il Landeskrankenhaus-Universitätsklinikum Graz
• Attivo nella ricerca scientifica per soluzioni ortopediche innovative
• Maestro di sci e soccorritore qualificato, comprendendo le esigenze dei pazienti attivi

Il medico si è laureato presso l'Università Medica di Wroclaw e ha conseguito un dottorato di ricerca presso l'Università Medica di Lodz. Acquisendo esperienza in Polonia, Germania, Svizzera e Svezia, il medico si specializza nella diagnosi e nel trattamento delle deformità e infezioni del ginocchio, anca, spalla, colonna vertebrale, mano e piede. L'esperienza include il trattamento chirurgico delle infezioni delle endoprotesi articolari e delle infiammazioni ossee, eseguendo sostituzioni di anca e ginocchio, interventi chirurgici del tunnel carpale e altro ancora. Membro di diverse società scientifiche, il medico ha tenuto numerose conferenze su revisioni chirurgiche ortopediche e complicazioni.<\/p>

Dr. Azmi Hamzaoglu is a leading spine surgeon with 36 years of experience in orthopedics and traumatology. He founded the Istanbul Scoliosis and Spine Center, the first facility in Turkey focused on spine surgery.

Dr. Hamzaoglu has performed thousands of complex surgeries, such as discectomy, kyphoplasty, scoliosis correction, and anterior cervical discectomy and fusion. He is known for developing new surgical techniques and has played a key role in improving spine care in Turkey.

He is a member of the Turkish Medical Association. He has also held important academic and clinical leadership positions, showing his dedication to high standards and patient care in spine surgery.

Education 

1998 – 2004 Medical Academy in Warsaw, 1st Faculty of Medicine Professional experience since 

2017 – orthopedic specialist Carolina Medical Center in Warsaw 

09.2015 – 12.20217 – Sports Medicine Center CSK MSW in Warsaw 

04.2013 – 08.2015 – Department of Trauma and Orthopedic Surgery, Praski Hospital in Warsaw 

08.2006 – 12.2012 – Department of Orthopedics and Traumatology of the Musculoskeletal System, CSK MSWiA in Warsaw 

03.2012 – Obtaining the title of specialist in Orthopedics and Traumatology of the Musculoskeletal System

Il medico è rinomato per la sua ricerca innovativa in Chirurgia Ortopedica, focalizzata sul miglioramento del processo di guarigione delle lesioni tendinee. I suoi studi su Tendoflex® e Hypericum perforatum hanno dimostrato significativi miglioramenti nella resistenza alla trazione del tendine d'Achille in modelli sperimentali. L'uso combinato di questi agenti ha mostrato risultati meccanici e istologici favorevoli, suggerendo un aumento dell'espressione del collagene durante la guarigione. Questa ricerca contribuisce allo sviluppo di trattamenti che potrebbero accelerare il recupero dei pazienti sottoposti a chirurgia di riparazione dei tendini.<\/p>

Il medico è un chirurgo traumatologico e ortopedico austriaco di spicco, riconosciuto a livello internazionale per la sua esperienza in lesioni alla spalla e legate allo sport, nonché nella chirurgia ricostruttiva delle articolazioni. Con decenni di esperienza chirurgica e leadership accademica, il medico è uno degli specialisti più rispettati in Austria nella medicina muscoloscheletrica e nella cura dei traumi.<\/p>

Laureatosi all'Università di Vienna negli anni '90, il medico si è formato presso l'Ospedale Generale di Vienna, specializzandosi nella ricostruzione articolare e nella chirurgia artroscopica. Attualmente, il medico è consulente senior presso la Wiener Privatklinik e l'Ospedale Generale di Vienna, eseguendo interventi chirurgici ricostruttivi, artroscopici e protesici.<\/p>

La ricerca del medico si concentra sul miglioramento delle tecniche artroscopiche e sulla comprensione biomeccanica delle lesioni alla spalla. Il medico è un membro attivo di diverse società internazionali di traumatologia e ortopedia e tiene frequentemente conferenze a congressi professionali.<\/p>

Thesis:

1. Mentese ST, Colak O, Gunenc YE, Tufekci K, Eren OC, Bozkurt SU. The Effect of Hyperelastic Bone Produced with Three Dimensional Bioprinter in Heterotopic Bone Formation.

Peer Reviewed Abstracts

1. Kuru P, Bilgin S, Mentese ST, Tazegul G, Ozgur S, Cilingir OT, Akakin D, Yarat A, Kasimay O. Ameliorative Effect of Chronic Moderate Exercise in Smoke Exposed or Nicotine Applied Rats From Acute Stress Nicotine Tob Res. 2014 Sep 19. pii: ntu182. (As Senior Medical Student)

2. Özdemir ZN, Tazegül G, Kuru P, Bilgin S, Menteşe ST, Erzik C, Şirvancı S, Yeğen B. Nicotine alleviates colitis-induced damage in rats via its anti-oxidative activity. Marmara Medical Journal 2014; 27: 13-20 DOI: 10.5472/MMJ.2013.03125.1 (As Senior Medical Student)

3. Özay Özkaya Mutlu, Mert Canlı, Semih Tiber Menteşe, Ahmet Dilber; Retrospective Comperative Analysis of Preoperative Lymph Node Imaging and Pathological Results in Malignant Melanoma Patients, October Antalya 2017

Peer Reviewed Posters

1. Özlem Çolak, Semih Tiber Menteşe, Özay Özkaya, Deniz Özcan; Case Report: Differentiation of Intraoral lesions, Squamous Cell Carcinoma or Pseudoepitheliamatous Hyperplasia, October 2016, Antalya, Turkey.

2. Özay Özkaya, Semih Tiber Menteşe, Özlem Çolak, İlker Üsçetin; The Effect of Staging on Survey in Malignant Melanoma, October 2016, Antalya, Turkey.

3. Özay Özkaya Mutlu, Semih Tiber Menteşe, Ahmet Dilber, Özlem Çolak; Case Report: Free Adductor Magnus Flap Reconstruction of Calcanel Defect, October 2017, Antalya, Turkey.

4. Özlem Çolak, Özay Özkaya Mutlu, Kadri Özer, S. Tiber Menteşe; Multifunctional Use of Elongated Temporoparietal Fascia Flap in Periorbital Reconstruction, October 2018, Antalya, Turkey.

5. Ayberk Akçay, Özlem Çolak, Semih Tiber Menteşe; Case Report: Superior Epigastric Artery Perforator Propellar Flap Reconstruction of Anterior Chest Wall Defect, October 2018, Antalya, Turkey.

6. Batıbey Batmacı, Harun Erbek, Semih Tiber Menteşe, Türkay Gökeri, İlker Üsçetin, Ayşin Karasoy Yeşilada; Malign Hand Tumors in the Last Five Years In Our Clinic, September 2019, Samsun, Turkey.

7. Semih Tiber Menteşe, Harun Erbek, Özlem İmren, Mert Canlı, İlker Üsçetin, Ayşin Karasoy Yeşilada; Regional Fasciectomy Treatment Results of Dupuytren’s Contracture Patients, September 2019, Samsun, Turkey.

8. Semih Tiber Menteşe, Harun Erbek, Türkay Gökeri, Özlem İmren, Mert Canlı, Ayşin Karasoy Yeşilada; The Comparison of Results of Late Term Primarily Fixed and Hunter Prosthesis Used Flexor Digitorum Profundus Injuries, September 2019, Samsun, Turkey.

9. Semih Tiber Menteşe, Özlem Çolak, Mert Canlı, İlker Üsçetin, Ayşin Karasoy Yeşilada; Extensor Indicis Proprius Transfer Supplied with Ruptured Extensor Pollicis Longus (EPL) Proximal Portion in a Patient with Recurrent EPL Rupture, September 2019, Samsun, Turkey.

10. Özlem Çolak, Mahir Gökbulut, Selman Taşkın, Tuğçe Yasak Par, Semih Tiber Menteşe, İlker Üsçetin; Lesions Prediagnosed as Vascular Tumors; September 2020, İstanbul, Turkey.

11. Özlem Çolak, Tuğçe Yasak Par, Emre Gunenc, Selman Taşkın, Semih Tiber Menteşe, İlker Üsçetin; Flap Reconstruction of Periorbital Area Zone 2 Tumor Excision Defects, September 2020, İstanbul, Turkey.

12. Özlem Çolak, Emre Gunenc, Selman Taşkın, Tuğçe Yasak Par, Semih Tiber Menteşe, İlker Üsçetin; Thoracal Wall Reconstruction in a Male Patient with Poland Syndrome, September 2020, İstanbul, Turkey.

13. Özlem Çolak, Burak Yılmaz, Semih Tiber Menteşe, Tuğçe Yasak, İlker Üsçetin; A Rare Skin Malignancy: Sebaceous Carcinoma, November 2021, Antalya, Turkey.

Oral Presentation:

1. The Effect of Apelin on Indomethacin Induced Gastric Ulcer, World Gastroenterology Subregional Meeting, November 2011, Antalya, Turkey. (As Senior Medical Student)

2. Özlem Çolak, Semih Tiber Menteşe, Özay Özkaya Mutlu, İlker Üsçetin; Case Report: 4 Different Merkel Cell Carcinoma, October 2018, Antalya, Turkey.

3. Özlem Çolak, Semih Tiber Menteşe, İlker Üsçetin, Özay Özkaya Mutlu; Our Clinical Experience, Retrospective Analysis of Gynecomastia Patients, October 2018, Antalya, Turkey.

4. Semih Tiber Menteşe, Akif Ayberk Akçay, İlker Üsçetin, Harun Erbek, Ayşin Karasoy Yeşilada; Our Approach to Congenital Hand Anomalies Between 2015-2019 Time Periods in Our Clinic, April 2019, İstanbul, Turkey.

5. Semih Tiber Menteşe, Mert Canlı, Özlem Çolak, Batıbey Batmacı, Ayşin Karasoy Yeşilada; Results of Repair Through Nerve Graft in Our Clinic in 2015-2019 Time Periods, April 2019, İstanbul, Turkey.

6. Semih Tiber Menteşe, Mert Canlı, Özlem Çolak, Harun Erbek, Ayşin Karasoy Yeşilada; The Evaluation of Long Term Results of Mallet Finger Cases Operated 2015-2019 Periods in Our Clinic, April 2019, İstanbul, Turkey.

7. Akif Ayberk Akçay, Semih Tiber Menteşe, Ayşin Karasoy Yeşilada, Özlem Çolak; The Evulation of Biomechanical and Histologic Aspects the Effect of Direct Thrombin inhibitors on Tendon Healing, September 2019, Samsun, Turkey.

8. Özlem Çolak, Harun Erbek, Tuğçe Yasak Par, Selman Taşkın, Mert Canlı, Semih Tiber Menteşe, İlker Üsçetin; Comparison of Fat Pad Transposition and Fat Graft Application After Fat Pad Resection in Transconjunctival Lower Eyelid Blepharoplasty, September 2020, İstanbul, Turkey

9. Özlem Çolak, Zeynep Öykü Gürel, Semih Tiber Menteşe, İlker Üsçetin, Mahir Gökbulut; Versatile Use of Thoracodorsal Artery Perforator Flap in Axillary Reconstruction, November 2021, Antalya, Turkey.

10. Türkay Gökeri, Tiber Menteşe, Özlem Çolak, Günay Güldoğuş, Tuğçe Yasak Par; Effects of Covid-19 Pandemics on Emergency Plastic Surgery Patiens Admission, November 2021, Antalya, Turkey.

11. Özlem Çolak, Tuğçe Yasak Par, Semih Tiber Menteşe, Zeynep Öykü Gürel, İlker Üsçetin, Mahir Gökbulut ; Retrospective Analysis of Fourniere’s Gangrene Reconstruction Patients Operated From 2010 to 2021, November 2021, Antalya, Turkey.

12. Özlem Çolak, Semih Tiber Menteşe, Günay Güldoğuş, Tuğçe Yasak Par; Foot Defect Reconstruction with a Superficial Circumflex İliac Artery Flap Including a Bony Component, November 2021, Antalya, Turkey.

13. Özlem Çolak, Semih Tiber Menteşe, Günay Güldoğuş, Ayça Ergan Şahin; Reconstruction of Wrist Dorsum with a Very Thin Flap: Superficial Circumflex İliac Artery Perforator Flap, November 2021, Antalya, Turkey.

14. Semih Tiber Menteşe, Özlem Çolak, Caner Ali İlhan, Tuğçe Yasak Par, İlker Üsçetin; An Effective Solution for Wide Abdominal Wall Defect: Free Latissimus Dorsi Flap, November 2021, Antalya, Turkey.

15. Özlem Çolak, Semih Tiber Menteşe, Caner Ali İlhan, Ayça Ergan Şahin; An Early and Higher Function Providing Reconstruction Option in Phalangeal Bony Defects, November 2021, Antalya, Turkey.

Experiences:

1. Cardiovascular Surgery Clinic, Cardiology Hospital C. I. Parhon Iaşi/ROMANIA 2010 (IFMSA Medical Student Exchange Program)

2. Gastroenterology Clinic, Hospital Clínico Universitario Lozano Blesa Zaragoza/SPAIN 2011 (IFMSA Medical Student Exchange Program)

3. Obstetrics and Gynecology Clinic, Plastic and Reconstructive Surgery Clinic, General Surgery Clinic, Sapienza University of Rome, Rome/ITALY 2012 (ERASMUS Student Exchange Program)

4. Cardiology Clinic, Herlev Hospital, Copenhagen/DENMARK 2012 (IFMSA Medical Student Exchange Program)

5. General Surgery Clinic, Hippokration General Hospital, Athens/GREECE 2012 (Observership As Medical Student)

Courses:

1. National XXXI. Basic Microsurgery Course, June 2018, Marmara University Medical Faculty, İstanbul.

2. XXVIII. Laboratory Animal Science for Researchers Course, September 2019, YUDETAM, Yeditepe University Experimental Research Center

Education and Residency

2001 to 2007: Medical Education, Meram School of Medicine, Selçuk University

2009 to 2014: Residency Education, School of Medicine, Atatürk University

Experience

2009 to 2014: Residency, Department of Orthopedics and Traumatology, School of Medicine, Atatürk University

2015 to 2016: Conscription, Kozluk State Hospital, Batman

2016: Orthopedic Oncology, Experience Trainings, Ibn-I Sina Hospital, Ankara University

2017: Orthopedic Oncology, Experience Trainings, Acıbadem Medical School

2021: Orthopedic Oncology Training, Acıbadem Medical School

Professional Memberships

-Association of Bone and Soft Tissue Tumors

-Association of Hip and Knee Arthroplasty

-Foot and Ankle Surgery Department

-Association of Extremity Reconstruction and Ilizarov Methods Development

-Federation of Turkish Society of Orthopedics and Traumatology (TOTBID)

Il medico è un chirurgo ortopedico e di sostituzione articolare con oltre 28 anni di esperienza. Specializzato nel trattamento conservativo e operativo dell'osteoartrite, il medico è esperto in endoprotesi minimamente invasive dell'articolazione dell'anca e nel trattamento delle fratture periprotesiche degli arti inferiori.<\/p>

Laureato presso la Ruprecht-Karls-Universität di Heidelberg, Germania, il medico ha anche esperienza nella chirurgia artroscopica per lesioni sportive. Con numerose pubblicazioni a suo credito sia a livello nazionale che internazionale, il medico è riconosciuto per i suoi contributi al campo.<\/p>

Specializzato in chirurgia del piede, compreso l'alluce valgo, presso l'Ospedale Universitario Atlas.

• Oltre 20 anni di esperienza in ortopedia e traumatologia
• Ha pubblicato ricerche su varie condizioni ortopediche e trattamenti
• Formazione presso la Facoltà di Medicina Cerrahpaşa dell'Università di Istanbul
• Esperienza in chirurgia dello sport e sostituzioni articolari

Dr. Javier Albiñana Silveti is a specialist in orthopedic surgery and pediatric traumatology. He has over 38 years of experience in the treatment of hip dysplasia, bone tumors, malformations and Perthes disease.

Experience

2013 – present | Pediatric Traumatology at the Ruber Internacional and Quirón Hospital in Pozuelo.

2004-2013|Head of the Department of Pediatric Orthopedics at the La Paz Hospital in Madrid.

1994-2004| Assistant in pediatric orthopedics at the Niño Jesus Hospital in Madrid

1992-1994 | Fellow, Department of Pediatric Orthopedics, University of Iowa (USA)

1988-1989|Research Fellow in Paediatric Orthopaedics, Oxford University (UK).

Qualification

1988 | Doctor of Medicine, Autonomous University of Madrid.

1982 | Graduated from the Faculty of Medicine of the Autonomous University of Madrid.

Education:

2004|Associate Professor of the Faculty of Medicine of the UAM.

Publications

2019|Does femoral head orientation influence acetabular development? An experimental study in Lamb. J Pediatr Orthop. 2019 Sep;39(8):416–421.

2015|Pavlik harness outcomes in Ortolani-positive hips: predictors of failure and arthrographic findings. J Child Orthop 2015 Aug;9(4):249-53.

2013|Selective triradiate epiphysiodesis for the treatment of residual experimental acetabular dysplasia. J Pediatr Orthop. 2013 Dec;33(8):821-8.

Communications and presentations

2021|Perthes Disease. Congress of Pediatric Orthopedics, SEOT, Ecuador.

2019|Dysplasia of the hip, Children's Hospital, San Jose, Costa Rica, April 2019

2018| Cerebral Palsy, ASFAPE, Madrid.

2007 | Tear and Dysplasia of the Hip, POSNA, San Diego.

2005 | Open reduction failure and DDH. Boston, IPOTT.

• AREAS OF INTEREST
• Spine surgery
• Scoliosis
• Kyphosis
• Childhood spinal diseases
• Degenerative spine diseases
• Lumbar cervical disc herniation
• Knee hip joint disorders
• Orthopedic trauma surgery

• Education and Specialization
• 2010 - Cerrahpasa Faculty of Medicine - Medical Education
• 2016 - Medeniyet University Goztepe Training and Research Hospital - Specialization

• Experience
• 2016 - 2022 - Sisli Hamidiye Etfal Training and Research Hospital
• 2015 -2016 - Chicago Loyola University, Illinois, USA

• Courses and Certificates
• 13.12.2019-14.12.2019 Turkish Spine Society Eurospine Accredited Education Modules
• 08.11.2019-10.11.2019 Turkish Spine Society Eurospine Accredited Education Modules
• 31.08.2015-04.09.2015 Basic Microsurgery Course, MICROSURGERY EDUCATION-RESEARCH LABORATORY
• AO Trauma Course-Basic Principles of Fracture Management
• 07.06.2014-10.06.2014 Fracture Management, Kodi Kojima Chairperson AOTrauma Education Commission
• 01.03.2013-02.03.2013 Instrumentation in Arthroscopic Surgery

• Professional Memberships
• Turkish Orthopedics and Traumatology Association (TOTBİD)
• Turkish Medical Association - Istanbul Medical Chamber

Prof. İbrahim Azboy, M.D.

Languages: English, Kurdish, Arabic

Orthopaedics and Traumatology
 

Areas of Expertise and Interest

• Hip & knee arthroplasty (primary, revision, robotic‑assisted)
• Infection prevention & management in joint replacements
• Minimally invasive and joint‑preserving orthopedic surgery
• Sports & trauma-related injuries (e.g. ACL, fractures)
• Osteoarthritis, cartilage damage & osteonecrosis

International Researcher IDs:  

• ORCID: 0000-0003-0926-3029 / Yoksis Researcher ID: 145243 

Education & Training

• 1994–2001: Hacettepe University, Faculty of Medicine
• 2002–2008: Ministry of Health Istanbul Training and Research Hospital
• 2014 & 2017: Hospital for Special Surgery, New York, USA – Knee and Hip Arthroplasty and Arthroscopy Training
• 2016: Rothman Institute, Thomas Jefferson University, Philadelphia, USA – Knee and Hip Arthroplasty and Hip Preserving Surgery Training

Academic & Professional Appointments

• 2021–Present: Professor, Istanbul Medipol University
• 2017–2020: Associate Professor, Istanbul Medipol University
• 2011–2017: Assistant Professor, Dicle University
• 2008–2011: Consultant MD, Şanlıurfa and Balıkesir Military Hospitals

Professional Memberships

• Member of 9 national and international orthopedic associations including:
  AAHKS, SICOT, EHS, KADAD, TOTBID, TOTEK, and TTB

Scientific & Educational Contributions

• Prof. Dr. İbrahim Azboy has authored over 70 internationally and 25 nationally peer-reviewed journal articles, contributed to 4 book chapters and 2 book translations, and presented at 25+ international and 65+ national congresses. He also serves as a reviewer for 13 scientific journals, including JBJS, JOA, SICOT-J, and JORR.

Teaching & Speaking Engagements

• Speaker/trainer in 20+ national courses and congresses on topics such as:
• Hip and knee arthroplasty
• Prosthetic joint infections
• VTE prophylaxis
• Surgical approaches and implant strategies

Dr. Pablo de la Cuadra (Pablo Cuadra de la Virgili) is an orthopedic surgeon and traumatologist in Madrid. He specializes in sports injuries and shoulder surgery at Hospital Ruber Internacional, where he has worked since 1999. He has over 25 years of experience. He leads a multidisciplinary unit and heads a specialized traumatology team. He is a recognized expert in complex shoulder disorders. He uses advanced arthroscopic and reconstructive techniques for instability and rotator cuff injuries.

Accreditations: MD (1993) and PhD in Medicine (2001), Autonomous University of Madrid. Specialist in Orthopedic Surgery and Traumatology after residency at Hospital Puerta de Hierro (1995–1999). Current roles: Orthopedic Specialist at Centro Médico Habana (1999–present) and Specialist Physician at Hospital Puerta de Hierro (2000–present). He is also an Associate Professor of Health Sciences at the Autonomous University of Madrid.