RT Journal Article SR Electronic T1 Carence en vitamine B12 JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1300 OP E1301 DO 10.1503/cmaj.220306-f VO 194 IS 37 A1 Silverstein, William K. A1 Cheung, Matthew C. A1 Lin, Yulia YR 2022 UL http://www.cmaj.ca/content/194/37/E1300.abstract