Saltzman John R
Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts, USA; Division of Gastroenterology, Hepatology, and Endoscopy, Brigham and Women's Hospital, Boston, Massachusetts, USA.
Gastrointest Endosc. 2020 Jul;92(1):75-77. doi: 10.1016/j.gie.2020.03.012.