Authors: Laura Muldoon; Simone Dahrouge; William Hogg; Robert Geneau; Grant Russell; Michael Shortt Journal: Can Fam Physician Date: 2010-07 Impact factor: 3.275
Authors: Sarah A Sweeney; Andrew Bazemore; Robert L Phillips; Rebecca S Etz; Kurt C Stange Journal: Am J Public Health Date: 2012-06 Impact factor: 9.308