1. Department of Gastroenterology; Sanjay Gandhi Postgraduate Institute of Medical Sciences; Lucknow India
2. Department of Medicine, Yong Loo Lin School of Medicine; National University of Singapore; Singapore
3. Department of Gastroenterology and Hepatology, Princess Alexandra Hospital Brisbane; University of Queensland; Brisbane Queensland Australia
4. Department of Gastroenterology; China-Japan Friendship Hospital; Beijing China
5. Institute of Gastroenterology; Yonsei University College of Medicine; Seoul Korea
6. Faculty of Medicine, University of Indonesia and Dr. Cipto Mangunkusumo Hospital; Jakarta Indonesia
7. RSUPN Dr. Cipto Mangunkusumo Hospital; Jakarta Indonesia
8. Department of Medicine, Division of Gastroenterology; Jichi Medical University; Shimotsuke Tochigi Japan
9. Fourth Military Medical University; Xi'an China
10. Division of Gastroenterology and Hepatology, Lynda K and David M Underwood Center for Digestive Disorders; Houston Methodist Hospital; Houston Texas USA
11. Clínica de Gastroenterología, Facultad de Medicina; Montevideo Uruguay