Geha Rabih, Peters Marion, Gill Ryan M, Dhaliwal Gurpreet
From the Division of Gastroenterology (M.P.), Department of Medicine (R.G., M.P., G.D.), and the Department of Pathology (R.M.G.), University of California, San Francisco, and Medical Service, San Francisco Veterans Affairs Medical Center (G.D.) - both in San Francisco.
N Engl J Med. 2017 Mar 2;376(9):869-874. doi: 10.1056/NEJMcps1609391.