1 The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York.
2 Division of Gastroenterology, McGill University Health Centre, Montreal, Canada; 1st Department of Medicine, Semmelweis University, Budapest, Hungary.
3 Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.