Amnon Sonnenberg1, Gennadiy Bakis2. 1. Division of Gastroenterology/Hepatology, The Portland VA Medical Center, Oregon Health and Science University, P3-GI, 3710 SW US Veterans Hospital Road, Portland, OR, 97239, USA. sonnenbe@ohsu.edu. 2. Division of Gastroenterology/Hepatology, The Portland VA Medical Center, Oregon Health and Science University, P3-GI, 3710 SW US Veterans Hospital Road, Portland, OR, 97239, USA.