Authors: Matthew C Farrelly; Kevin C Davis; M Lyndon Haviland; Peter Messeri; Cheryl G Healton Journal: Am J Public Health Date: 2005-03 Impact factor: 9.308
Authors: Katherine E Smith; Gary Fooks; Jeff Collin; Heide Weishaar; Sema Mandal; Anna B Gilmore Journal: PLoS Med Date: 2010-01-12 Impact factor: 11.069