McRae AD, Hohl CM, Rosychuk R, Vatanpour S, Ghaderi G, Archambault PM, Brooks SC, Cheng I, Davis P, Hayward J, Lang E, Ohle R, Rowe B, Welsford M, Yadav K, Morrison LJ, Perry J; Canadian COVID-19 Emergency Department Rapid Response Network (CCEDRRN) investigators for the Network of Canadian Emergency Researchers and the Canadian Critical Care Trials Group