Contraception
Volume 80, Issue 6 , Pages 504-511, December 2009

Continuous, daily levonorgestrel/ethinyl estradiol vs. 21-day, cyclic levonorgestrel/ethinyl estradiol: efficacy, safety and bleeding in a randomized, open-label trial☆

  • Alexander Teichmann

      Affiliations

    • Frauenklinik, Klinikum Aschaffenburg, 63739 Aschaffenburg, Germany
    • ,
  • Dan Apter

      Affiliations

    • Väestöliitto/The Sexual Health Clinic, FIN-00100 Helsinki, Finland
    • ,
  • Janusz Emerich

      Affiliations

    • Institute of Obstetric and Gynecology, Medical University of Gdańsk, 80-402 Gdańsk, Poland
    • ,
  • Klaus Greven

      Affiliations

    • 30459 Hannover, Germany
    • ,
  • Dagmara Klasa-Mazurkiewicz

      Affiliations

    • Institute of Obstetric and Gynecology, Medical University of Gdańsk, 80-402 Gdańsk, Poland
    • ,
  • Giambi B. Melis

      Affiliations

    • Department of Obstetrics and Gynecology, University of Cagliari, 09124 Cagliari, Italy
    • ,
  • Marek Spaczynski

      Affiliations

    • Department of Gynaecology, Obstetrics, and Gynaecologic Oncology, Division of Gynaecological Oncology, Poznan University of Medical Sciences, 61-535 Poznan, Poland
    • ,
  • Gary S. Grubb

      Affiliations

    • Research Headquarters, Wyeth Pharmaceuticals, Collegeville, PA 19426, USA
    • Corresponding Author InformationCorresponding author. Tel.: +1 610 353 3599.
    • ,
  • Ginger D. Constantine

      Affiliations

    • Research Headquarters, Wyeth Pharmaceuticals, Collegeville, PA 19426, USA
    • ,
  • Daniele Spielmann

      Affiliations

    • Women's Health, Wyeth Research, 92931 Paris, France
    • Deceased.

Received 25 November 2008; received in revised form 22 May 2009; accepted 22 May 2009. published online 07 August 2009.

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☆ This study was sponsored by Wyeth Research, Collegeville, PA.

PII: S0010-7824(09)00297-2

doi:10.1016/j.contraception.2009.05.128

Contraception
Volume 80, Issue 6 , Pages 504-511, December 2009

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