Dr. Somchai Amornyotin graduated from the Faculty of Medicine Siriraj Hospital, Mahidol University, in 1989. He became the staff of the Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, in 1996. Until 2004, he was the associate professor of the Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University. From 2005 to 2009, he was the chief of the Anesthesiology Division of Siriraj GI Endoscopy Center, Faculty of Medicine Siriraj Hospital, Mahidol University. His first scientific paper was published in Thailand, in 1999. He has practiced anesthesia for gastrointestinal endoscopy since 2002. He was on the committee of Siriraj Gastrointestinal Endoscopy Center, Faculty of Medicine Siriraj Hospital, in 2005. More than 80 of his articles have been published in Thai and international medical journals. Dr. Amornyotin is a member of the committee of the Royal College of Anesthesiologists of Thailand, the Gastroenterological Association of Thailand, and many scientific societies. He is the reviewer and editor of many international journals.