RT Journal Article SR Electronic T1 Diagnosing and managing drug allergy JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E532 OP E538 DO 10.1503/cmaj.171315 VO 190 IS 17 A1 Elissa M. Abrams A1 David A. Khan YR 2018 UL http://www.cmaj.ca/content/190/17/E532.abstract