RT Journal Article SR Electronic T1 Cutaneous ulcerations with systemic lupus erythematosus JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1734 OP E1734 DO 10.1503/cmaj.210518 VO 193 IS 45 A1 Izuka, Shinji A1 Takahashi, Yuko YR 2021 UL http://www.cmaj.ca/content/193/45/E1734.abstract