[1] Clinical Epidemiology Program,Division of General Internal Medicine
[2] Ottawa Hospital Research Institute,undefined
[3] School of Epidemiology,undefined
[4] Public Health and Preventive Medicine,undefined
[5] University of Ottawa,undefined
[6] Canadian EQUATOR Centre,undefined
[7] Ottawa,undefined
[8] Canada and The Ottawa Hospital,undefined
[9] General Campus,undefined
[10] Centre for Reviews and Dissemination,undefined
[11] University of York,undefined
[12] West Los Angeles VA Medical Center,undefined