Clinical Research Center, Chongqing Public Health Medical Center, Chongqing, China. Infectious Diseases and Immunity in Global Health Program, Research Institute, McGill University Health Centre, Montréal, QC, Canada. Chronic Viral Illness Service, McGill University Health Centre, Montréal, QC, Canada. Canadian HIV Trials Network (CTN), Canadian Institutes of Health Research (CIHR), Vancouver, BC, Canada. Division of Hematology, McGill University Health Centre, Montréal, QC, Canada.