Authors: Joel H Rubenstein; Hal Morgenstern; Henry Appelman; James Scheiman; Philip Schoenfeld; Laurence F McMahon; Valbona Metko; Ellen Near; Joan Kellenberg; Tal Kalish; John M Inadomi Journal: Am J Gastroenterol Date: 2013-01-15 Impact factor: 10.864
Authors: Nicholas J Shaheen; David S Weinberg; Thomas D Denberg; Roger Chou; Amir Qaseem; Paul Shekelle Journal: Ann Intern Med Date: 2012-12-04 Impact factor: 25.391