[1] McGill Univ, Ctr Hlth, Dept Child Psychiat, Montreal, PQ H3Z 1P2, Canada
[2] Montreal Childrens Hosp, Montreal, PQ H3H 1P3, Canada
[3] NYU, Sch Med, Ctr Child Study, New York, NY USA
[4] Univ British Columbia, Womens & Childrens Hosp, Vancouver, BC V5Z 1M9, Canada
[5] Schneider Childrens Hosp, New Hyde Pk, NY USA
[6] St Johns Univ, Dept Comp Informat Syst & Decis Sci, Queens, NY USA