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Typical use effectiveness of Natural Cycles: postmarket surveillance study investigating the impact of previous contraceptive choice on the risk of unintended pregnancy

Authors

  1. Correspondence to Dr Raoul Scherwitzl; raoul.scherwitzl{at}naturalcycles.com
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Citation

Bull J, Rowland S, Lundberg O, et al
Typical use effectiveness of Natural Cycles: postmarket surveillance study investigating the impact of previous contraceptive choice on the risk of unintended pregnancy

Publication history

  • Received September 6, 2018
  • Revised January 14, 2019
  • Accepted February 13, 2019
  • First published March 23, 2019.
Online issue publication 
March 23, 2019

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