Daniel M Shafran1, Paul E Bunce1, Wayne L Gold2. 1. Department of Medicine (Shafran, Bunce, Gold), University of Toronto; Division of Infectious Diseases (Bunce, Gold), University Health Network, Toronto, Ont. 2. Department of Medicine (Shafran, Bunce, Gold), University of Toronto; Division of Infectious Diseases (Bunce, Gold), University Health Network, Toronto, Ont. wayne.gold@uhn.ca.