RT Journal Article SR Electronic T1 Loperamide abuse JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E803 OP E803 DO 10.1503/cmaj.161421 VO 189 IS 23 A1 Tony Antoniou A1 David N. Juurlink YR 2017 UL http://www.cmaj.ca/content/189/23/E803.abstract AB