TY - JOUR T1 - Safer injection facilities for injection drug users: the debate continues JF - Canadian Medical Association Journal JO - CMAJ SP - 421 LP - 421 VL - 166 IS - 4 AU - William Campbell AU - Nady A. el-Guebaly Y1 - 2002/02/19 UR - http://www.cmaj.ca/content/166/4/421.abstract ER -