RT Journal Article SR Electronic T1 Rise in medical scans during pregnancy poses radiation risk JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1115 OP E1115 DO 10.1503/cmaj.1095810 VO 191 IS 40 A1 Lauren Vogel YR 2019 UL http://www.cmaj.ca/content/191/40/E1115.abstract