1 Department of Gastroenterology and Hepatology, Singapore General Hospital, Singapore, 169856, Singapore.
2 Institute of Digestive and Liver Diseases, St. Luke's Medical Center - Global City, Manila, Philippines.
3 Angioskope Clinic, São José Dos Campos, Brazil.
4 Department of Medicine, Division of Gastroenterology, Faculty of Medicine Siriraj Hospital, Siriraj GI Endoscopy Center, Mahidol University, Bangkok, Thailand.
5 Department of Gastroenterology and Hepatology, Singapore General Hospital, Singapore, 169856, Singapore. ravishankar.asokkumar@singhealth.com.sg.
6 Duke-NUS Graduate Medical School, Singapore, Singapore. ravishankar.asokkumar@singhealth.com.sg.