RT Journal Article SR Electronic T1 Drug supply and drug abuse JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1113 OP 1113-a VO 168 IS 9 A1 Wood, Evan A1 Tyndall, Mark W. A1 Schechter, Martin T. YR 2003 UL http://www.cmaj.ca/content/168/9/1113.2.abstract