RT Journal Article SR Electronic T1 Chronic cutaneous ulcer from drug use JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E677 OP E677 DO 10.1503/cmaj.211197 VO 194 IS 19 A1 Matthew W. McEwen A1 Allison Jones YR 2022 UL http://www.cmaj.ca/content/194/19/E677.abstract