Authors: David Madigan; Patrick B Ryan; Martijn Schuemie; Paul E Stang; J Marc Overhage; Abraham G Hartzema; Marc A Suchard; William DuMouchel; Jesse A Berlin Journal: Am J Epidemiol Date: 2013-05-05 Impact factor: 4.897
Authors: Louisa Degenhardt; Wayne D Hall; Michael Lynskey; John McGrath; Jennifer McLaren; Bianca Calabria; Harvey Whiteford; Theo Vos Journal: PLoS Med Date: 2009-09-29 Impact factor: 11.069