TY - JOUR T1 - Heroin history JF - Canadian Medical Association Journal JO - CMAJ SP - E144 LP - E144 DO - 10.1503/cmaj.733520 VL - 190 IS - 5 AU - G. Frank O. Tyers Y1 - 2018/02/05 UR - http://www.cmaj.ca/content/190/5/E144.abstract N2 - ER -