[1] McGill Univ, Fac Med, Montreal, PQ, Canada
[2] Hosp Sick Children, Dept Pediat, Toronto, ON, Canada
[3] CHU Quebec, Infect Dis Res Ctr, Quebec City, PQ, Canada
[4] Laval Univ, Quebec City, PQ, Canada
[5] McGill Univ, Hlth Ctr, Montreal Childrens Hosp, Infect Prevent & Control, Montreal, PQ, Canada
[6] Univ Montreal, Dept Microbiol Infect Dis & Immunol, Montreal, PQ, Canada
[7] McGill Univ, Hlth Ctr, Res Inst, Montreal, PQ, Canada
[8] McGill Univ, Hlth Ctr, Dept Pediat, Montreal Childrens Hosp, Montreal, PQ, Canada
[9] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada