Authors: Seth D Crockett; Carol Q Porter; Christopher F Martin; Robert S Sandler; Michael D Kappelman Journal: Am J Gastroenterol Date: 2010-03-30 Impact factor: 10.864
Authors: Martijn J Schuemie; Patrick B Ryan; Kenneth K C Man; Ian C K Wong; Marc A Suchard; George Hripcsak Journal: Stat Med Date: 2019-08-22 Impact factor: 2.373