Joseph R DiFranza1. 1. Department of Family Medicine and Community Health, University of Massachusetts Medical School, Worcester, Massachusetts, USA. difranzj@ummhc.org
Authors: David R Strong; Christopher W Kahler; Suzanne M Colby; Pamela C Griesler; Denise Kandel Journal: Drug Alcohol Depend Date: 2008-10-19 Impact factor: 4.492