RT Journal Article SR Electronic T1 Canada lags behind United States in drug return, reuse and recycling programs JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E197 OP E198 DO 10.1503/cmaj.109-3171 VO 182 IS 4 A1 Sabrina Doyle YR 2010 UL http://www.cmaj.ca/content/182/4/E197.abstract