RT Journal Article SR Electronic T1 Aspergillosis spores and medical marijuana JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1077 OP 1077 DO 10.1503/cmaj.1150062 VO 187 IS 14 A1 Waisglass, Barry R. YR 2015 UL http://www.cmaj.ca/content/187/14/1077.1.abstract