RT Journal Article SR Electronic T1 Don’t tamper with oxycodone JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 107 OP 107 DO 10.1503/cmaj.122099 VO 185 IS 2 A1 Fletcher, John A1 Tsuyuki, Ross YR 2013 UL http://www.cmaj.ca/content/185/2/107.abstract AB