RT Journal Article SR Electronic T1 Health care use and risk of ovarian cancer: Is there a link? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 949 OP 950 DO 10.1503/cmaj.070179 VO 176 IS 7 A1 Michael Fung-Kee-Fung A1 Melissa Brouwers A1 Thomas K. Oliver A1 Barry Rosen YR 2007 UL http://www.cmaj.ca/content/176/7/949.abstract