Dr. Lohsiriwat is a Professor of Surgery at the Division of General Surgery (Section of Colorectal Surgery), Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. He graduated Doctor of Medicine (M.D. with 1st-class honor and Gold medal) from Faculty of Medicine Siriraj Hospital, Mahidol University in 1999, and completed specialist training in General Surgery and Colon and Rectal Surgery at this institute in 2004 and 2006, respectively. Dr. Lohsiriwat was granted the Master of Science (M.Sc.) in Surgical Science from Imperial College of London, University of London (UK) in 2007, and the Doctor of Philosophy (Ph.D.) in Gastrointestinal Surgery from University of Nottingham (UK) in 2010. Also, he was a research fellow at St. Mark’s Hospital (UK) in 2006-2007, a visiting surgeon at Mayo Clinic (Minnesota, USA) in 2010, and an invited visiting professor at Kyushu University Hospital (Fukuoka, Japan) in 2017. His clinical interests comprise not only colorectal and anal surgery, but also perioperative pain management, surgical nutrition, surgical infection and enhanced recovery after surgery (ERAS). He is one of the pioneers in ERAS program in Thailand. He has authored more than 50 book chapters and more than 140 peer-reviewed scientific papers. Collectively, his work has been cited in the medical literature over 3200 times with h-index of 32. He was also recognized as the world’s top 2% scientists by Standford University in 2020, 2021, 2022, 2023 and 2024. Moreover, he authored a multiple award-wining Thai textbook entitled ‘Common anorectal diseases’ in 2015. He has been invited to be a speaker/panelist in more than 50 international conferences. Dr. Lohsiriwat is currently an associate editor of Siriraj Medical Journal and a former editor-in-chief of World Journal of Gastrointestinal Surgery. He is also a founding committee of Global Reach – European Society of Coloproctology, and an active member of the Royal College of Surgeons Thailand (served as a scientific committee), the Association of General Surgeons of Thailand (served as a general secretary), the Association of Thai Colorectal Surgeons (served as a foreign affair), and the Surgical Infection Society of Thailand (served as a general secretary).