Authors: Nicholas J Talley; G Richard Locke; Linda M Herrick; Vickie M Silvernail; Charlene M Prather; Brian E Lacy; John K DiBaise; Colin W Howden; Darren M Brenner; Ernest P Bouras; Hashem B El-Serag; Bincy P Abraham; Paul Moayyedi; Alan R Zinsmeister Journal: Contemp Clin Trials Date: 2012-02-10 Impact factor: 2.226