Contraception
Volume 79, Issue 3 , Pages 178-181 , March 2009

Contraceptive failure related to estimated cycle day of conception relative to the start of the last bleeding episode

  • Ellen R. Wiebe

      Affiliations

    • Department of Family Practice, University of British Columbia, Vancouver, BC, Canada V5Z1H9
    • Corresponding Author InformationCorresponding author. Tel.: +1 604 709 5611; fax: +1 604 873 8304.
    • ,
  • James Trussell

      Affiliations

    • Office of Population Research, Princeton University, Princeton, NJ 08540, USA
    • The Hull York Medical School, University of Hull, Hull HU6 7RX, England, UK

Received 12 June 2008 ,Revised 4 October 2008 ,Accepted 6 October 2008.

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☆ This research was supported by the Vancouver Foundation through a BC Medical Services Foundation grant to the Community Based Clinical Investigator (CBCI) Program at UBC's Department of Family Practice.

PII: S0010-7824(08)00485-X

doi: 10.1016/j.contraception.2008.10.004

Contraception
Volume 79, Issue 3 , Pages 178-181 , March 2009

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