Il Dott. Viktor Alexander Krol dirige il Dipartimento di Gastroenterologia e il Centro di Trattamento dell'Obesità presso il St. Martinus-Krankenhaus, specializzato in trattamenti gastrointestinali avanzati.
Dr. Huseyin Bektas is a Professor of Medical Sciences, Oncosurgeon and published author. He is a Member of the Association of Hepatobiliary and Pancreatic Surgery and a Teacher at the Hanover School of Medicine. He is also the Chief Physician at the Bremen-Mitte Hospital Department of General, Visceral and Oncological Surgery.