Ciccarone Dan
Department of Family and Community Medicine, University of California San Francisco, 500 Parnassus Ave., MU-3E, Box 0900, San Francisco, CA 94143-0900, USA.
Int J Drug Policy. 2012 Jan;23(1):16-7. doi: 10.1016/j.drugpo.2011.07.004. Epub 2011 Aug 17.