RT Journal Article SR Electronic T1 Safer injection facilities for injection drug users: the debate continues JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 421 OP 421 VO 166 IS 4 A1 Campbell, William A1 el-Guebaly, Nady A. YR 2002 UL http://www.cmaj.ca/content/166/4/421.abstract