Wellman Robert J, O'Loughlin Jennifer
Department of Family Medicine and Community Health, University of Massachusetts Medical School, Worcester, Massachusetts.
Department of Social and Preventive Medicine, Université de Montréal, Montreal, Quebec, Canada; Centre de recherche du Centre Hospitalier, Université de Montréal, Montreal, Quebec, Canada.
J Adolesc Health. 2015 Apr;56(4):365-6. doi: 10.1016/j.jadohealth.2015.01.015.