2 Department of Family and Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, P.O. Box 26671, Bahrain.
3 Infectious Disease and Immunity in Global Health Program, Research Institute of McGill University Health Centre, Montreal, QC H4A 4J1, Canada; Chronic Viral Illness Service, McGill University Health Centre, Montreal, QC H4A 3J1, Canada; Division of Hematology, McGill University Health Centre, Montreal, QC H4A 3J1, Canada.