1 Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore; Medicine Academic Clinical Programme, SingHealth Duke-NUS Academic Medical Centre, Singapore.
2 Section of Pathology, Department of Laboratory Medicine, Changi General Hospital, Singapore; Pathology Academic Clinical Programme, SingHealth Duke-NUS Academic Medical Centre, Singapore.
3 Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore; Medicine Academic Clinical Programme, SingHealth Duke-NUS Academic Medical Centre, Singapore. Electronic address: rahul.kumar@singhealth.com.sg.