Calvin Koh, MBBS FRCP, FASGE (@drcalvinkoh) 's Twitter Profile
Calvin Koh, MBBS FRCP, FASGE

@drcalvinkoh

GI physician Singapore. Endoscopy, cancer screening. Tweets my own opinion.

ID: 1295960807360983040

linkhttps://www.gastroenterology-group.com calendar_today19-08-2020 05:48:38

926 Tweet

753 Followers

595 Following