RT Journal Article SR Electronic T1 Update on fertility preservation for younger women with breast cancer JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1003 OP E1009 DO 10.1503/cmaj.200245 VO 192 IS 35 A1 Ellen Warner A1 Karen Glass A1 Shu Foong A1 Emily Sandwith YR 2020 UL http://www.cmaj.ca/content/192/35/E1003.abstract