1 Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
2 Department of Medicine, Faculty of Medicine, Kuwait University, Jabriyah, Kuwait.
3 Division of Gastroenterology, The McGill University Health Center, Montreal General Hospital, McGill University, Montréal, Québec, Canada; Research Institute of the McGill University Health Center, Montréal, Québec, Canada. Electronic address: alan.barkun@muhc.mcgill.ca.