RT Journal Article SR Electronic T1 Primary chemoprevention of breast cancer: Are the adverse effects too burdensome? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E276 OP E278 DO 10.1503/cmaj.141627 VO 187 IS 9 A1 Vinay Prasad A1 Marie Diener-West YR 2015 UL http://www.cmaj.ca/content/187/9/E276.abstract