Affiliation: | 1. Department of Gastroenterology, Department of Radiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, India;1. Department of Gastroenterology, University of Toronto, Toronto, Ontario, Canada;2. Department of Medical Imaging, St. Michael’s Hospital, Toronto, Ontario, Canada;1. Divisione di Medicina II, Hospital “G. Salvini” of Garbagnate Milanese, Milan, Italy |