1. UBC James Hogg Research Centre, Vancouver, BC, Canada.
2. AIDS Research Program, St. Paul's Hospital, Vancouver, BC, Canada.
3. Department of Family Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.
4. Division of HIV/AIDS, Department of Medicine, University of British Columbia, Vancouver, BC, Canada.
5. BC Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada.
6. Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.
7. UBC Department of Medicine and Division of Respiratory Medicine, St. Paul's Hospital, Vancouver, BC, Canada.
8. Department of Radiology and Diagnostic Imaging, St. Paul's Hospital, Vancouver, BC, Canada.