RT Journal Article SR Electronic T1 Abortion and breast cancer JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 237 OP 238 DO 10.1136/jech.56.3.237-a VO 56 IS 3 A1 J Brind A1 V M Chinchilli YR 2002 UL http://jech.bmj.com/content/56/3/237.2.abstract AB