The effectiveness of a fertility awareness based method to avoid pregnancy in relation to a couple's sexual behaviour during the fertile time: a prospective longitudinal study

Author: Frank-Herrmann P.   Heil J.   Toledo E.   Baur S.   Pyper C.   Jenetzky E.   Strowitzki T.   Freundl G.  

Publisher: Oxford University Press

ISSN: 1460-2350

Source: Human Reproduction, Vol.22, Iss.5, 2007-05, pp. : 1310-1319

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