| Department of Pediatrics and Department of Psychology, University of Montreal, Montreal QC H3T 1J4, Canada; email: richard.ernest.tremblay@umontreal.ca. |
| Drs. van Lier and Koot are with Vrije Universiteit Amsterdam; Drs. Boivin and Dionne are with GRIP, École de Psychologie, Université Laval; Drs. Vitaro, Tremblay, and Pérusse are with GRIP, Université de Montréal; and Dr. Brendgen is with Département de Psychologie, Université du Québec à Montréal. |
| International Laboratory for Child and Adolescent Mental Health Development, INSERM U669, Paris 75679, France. tremblar@grip.umontreal.ca |
| International Network for Early Childhood Health Development, University College Dublin, Ireland. tremblar@grip.umontreal.ca |
| Research Unit on Children's Psychosocial Maladjustment, Département de pédiatrie et de psychologie, University of Montreal, 90 Avenue Vincent d'Indy, Montreal, QC, H2V 2S9, Canada. |