[1] Minist Natl Guard Hlth Affairs, Dept Pediat, Riyadh, Saudi Arabia
[2] King Abdullah Int Med Res Ctr, Riyadh, Saudi Arabia
[3] King Saud Bin Abdulaziz Univ Hlth Sci, Riyadh, Saudi Arabia
[4] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada
[5] Univ Montreal, Dept Microbiol Infect Dis & Immunol, Montreal, PQ, Canada
[6] Virginia Commonwealth Univ, Dept Pediat, Richmond, VA 23284 USA
[7] Univ Toronto, Div Pediat Crit Care, Dept Pediat, Toronto, ON, Canada
[8] Univ Ottawa, Dept Pediat, Ottawa, ON, Canada
[9] McGill Univ Hlth Ctr, Res Inst, Montreal, PQ, Canada
[10] McGill Univ, Div Pediat Infect Dis, Dept Pediat, Montreal, PQ, Canada
[11] McGill Univ Hlth Ctr, Div Microbiol, Dept Clin Lab Med, Montreal, PQ, Canada
[12] Univ Montreal, Dept Pediat, Montreal, PQ, Canada
[13] McGill Univ, Div Pediat Crit Care, Dept Pediat, Montreal, PQ, Canada