Corresponding Author

Wanich Piyanirun

Division of Gastroenterology and Hepatology, Department of Medicine, Phramongkutklao Hospital

Correspondence

Somchai Leelakusolvong, Division of Gastroenterology, Department of Internal Medicine, Siriraj Hospital, Mahidol University, Bangkok 10170, Thailand.

Email: kob3844@gmail.com

Wanich Piyanirun, Division of Gastroenterology, Department of Medicine, Pramongkutklao Hospital, 315 Rajvithi Road, Rajthevee, Bangkok 10400, Thailand.

Email: wanich_p@yahoo.com