Andrea C Tricco* 1,2,3
, Ba' Pham* 1,2,4
, Bernard Duval5
, Gaston De Serres5
, Vladimir Gilca5
, Linda Vrbova6
, Andrea Anonychuk1,7
, Murray Krahn4,7
and David Moher2 
1Epidemiology and Biostatistics, GlaxoSmithKline Canada, Mississauga, Ontario, Canada
2Chalmers Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
3Institute of Population Health, Ottawa, Ontario, Canada
4Department of Health Policy, Management and Evaluation, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
5Centre de Recherche du CHUQ, Universite Laval, Institut national de santé publique du Québec, Canada
6University of British Columbia, Department of Health Care and Epidemiology, Vancouver, British Columbia, Canada
7Division of Clinical Decision Making, Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada