1. Departments of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
2. Division of Microbiology, Calgary Laboratory Services, Calgary, Alberta, Canada
3. AstraZeneca Pharmaceuticals LP, Waltham, Massachusetts, USA
4. International Health Management Associates, Schaumburg, Illinois, USA
5. Public Health Research Institute TB Center, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
6. Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, Alberta, Canada
7. University of Pretoria, Pretoria, South Africa