1. School of Public Health; University of Alberta; Edmonton Alberta Canada
2. ACHORD, 2-040 Li Ka Shing Center; University of Alberta; Edmonton Alberta Canada
3. Department of Epidemiology and Biostatistics; McGill University; Montreal Quebec Canada
4. Clinical and Health Informatics Research Group; Department of Epidemiology and Biostatistics; McGill University; Montreal Quebec Canada
5. Faculty of Pharmacy and Pharmaceutical Sciences; University of Alberta; Edmonton Alberta Canada
6. Department of Medicine; Faculty of Medicine and Dentistry; University of Alberta; Edmonton Alberta Canada