1 Niagara Health (Gehrke, Tsang), St. Catharines, Ont.; Niagara Regional Campus (Chan, Tsang), Michael G. DeGroote School of Medicine, McMaster University, St. Catharines, Ont.; William Osler Health System (Binnie), Brampton, Ont.; Sturgeon Community Hospital (Rewa), St. Albert, Alta.; University of Alberta Hospital (Rewa), Edmonton, Alta.; Department of Critical Care Medicine (Rewa), University of Alberta, Edmonton, Alta.; University Health Network (Herridge); Department of Medicine (Herridge, Burns), University of Toronto, Toronto, Ont.; St. Joseph's Health Care (Cook), Hamilton, Ont.; Departments of Medicine (Cook, Tsang), and Clinical Epidemiology & Biostatistics (Cook), McMaster University, Hamilton, Ont.; St. Michael's Hospital (Burns), Toronto, Ont.
2 Niagara Health (Gehrke, Tsang), St. Catharines, Ont.; Niagara Regional Campus (Chan, Tsang), Michael G. DeGroote School of Medicine, McMaster University, St. Catharines, Ont.; William Osler Health System (Binnie), Brampton, Ont.; Sturgeon Community Hospital (Rewa), St. Albert, Alta.; University of Alberta Hospital (Rewa), Edmonton, Alta.; Department of Critical Care Medicine (Rewa), University of Alberta, Edmonton, Alta.; University Health Network (Herridge); Department of Medicine (Herridge, Burns), University of Toronto, Toronto, Ont.; St. Joseph's Health Care (Cook), Hamilton, Ont.; Departments of Medicine (Cook, Tsang), and Clinical Epidemiology & Biostatistics (Cook), McMaster University, Hamilton, Ont.; St. Michael's Hospital (Burns), Toronto, Ont. jennifer.tsang@mcmaster.ca.