[1] BRITISH COLUMBIA CTR EXCELLENCE HIV AIDS,VANCOUVER,BC,CANADA
[2] UNIV BRITISH COLUMBIA,DEPT HLTH CARE & EPIDEMIOL,VANCOUVER,BC V6T 1W5,CANADA
[3] UNIV BRITISH COLUMBIA,DEPT MED,VANCOUVER,BC V6T 1W5,CANADA
[4] UNIV BRITISH COLUMBIA,DEPT PATHOL,VANCOUVER,BC V6T 1W5,CANADA
[5] ST PAULS HOSP,VANCOUVER,BC V6Z 1Y6,CANADA