1. Department of Medicine, Division of Infectious Diseases, University of Alberta, Edmonton, Alberta, Canada
2. School of Public Health, University of Alberta, Edmonton, Alberta, Canada
3. Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
4. Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
5. TB Services, British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada