RT Journal Article SR Electronic T1 Mass poisoning in Markham highlights wolfsbane risk JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1255 OP E1255 DO 10.1503/cmaj.1096017 VO 194 IS 36 A1 Vogel, Lauren YR 2022 UL http://www.cmaj.ca/content/194/36/E1255.abstract