World J Gastroenterol 2014 Mar;20(11):2979-94
Sajjad Khan, Silke Cameron, Martina Blaschke, Federico Moriconi, Naila Naz, Ahmad Amanzada, Giuliano Ramadori, Ihtzaz Ahmed Malik, Clinic of Gastroenterology and Endocrinology, University Medical Center, Robert-Koch-Str. 40, 37075 Goettingen, Germany.