Authors: Gordon H Guyatt; Pj Devereaux; Joel Lexchin; Samuel B Stone; Armine Yalnizyan; David Himmelstein; Steffie Woolhandler; Qi Zhou; Laurie J Goldsmith; Deborah J Cook; Ted Haines; Christina Lacchetti; John N Lavis; Terrence Sullivan; Ed Mills; Shelley Kraus; Neera Bhatnagar Journal: Open Med Date: 2007-04-14