1. From the Anticoagulation Management Service and Division of Cardiology, Department of Medicine, University of Alberta (Bungard), Edmonton, Alberta; College of Pharmacy and Nutrition, University of Saskatchewan (Yakiwchuk [student]), Saskatoon, Saskatchewan; Northern Alberta HIV Program, Alberta Health Services (Foisy), Edmonton, Alberta; Anticoagulation Program, Alberta Health Services (Brockle-bank), Calgary, Alberta. Contact