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Natural family planning with and without barrier method use in the fertile phase: efficacy in relation to sexual behavior: a German prospective long-term study.
Frank-Herrmann P, Freundl G, Gnoth C, Godehardt E, Kunert J, Baur S, Sottong U. Frank-Herrmann P, et al. Among authors: freundl g. Adv Contracept. 1997 Jun-Sep;13(2-3):179-89. doi: 10.1023/a:1006551921219. Adv Contracept. 1997. PMID: 9288336
A new method to detect significant basal body temperature changes during a woman's menstrual cycle.
Freundl G, Frank-Herrmann P, Brown S, Blackwell L. Freundl G, et al. Eur J Contracept Reprod Health Care. 2014 Oct;19(5):392-400. doi: 10.3109/13625187.2014.948612. Epub 2014 Aug 27. Eur J Contracept Reprod Health Care. 2014. PMID: 25159914
Opinion: natural family planning and the management of infertility.
Gnoth C, Frank-Herrmann P, Freundl G. Gnoth C, et al. Among authors: freundl g. Arch Gynecol Obstet. 2002 Dec;267(2):67-71. doi: 10.1007/s00404-002-0293-8. Arch Gynecol Obstet. 2002. PMID: 12439549 Review.
State-of-the-art of non-hormonal methods of contraception: IV. Natural family planning.
Freundl G, Sivin I, Batár I. Freundl G, et al. Eur J Contracept Reprod Health Care. 2010 Apr;15(2):113-23. doi: 10.3109/13625180903545302. Eur J Contracept Reprod Health Care. 2010. PMID: 20141492 Review.
Efficacy of natural family planning methods.
Freundl G. Freundl G. Eur J Contracept Reprod Health Care. 2010 Oct;15(5):380-1; author reply 381-2. doi: 10.3109/13625187.2010.507889. Eur J Contracept Reprod Health Care. 2010. PMID: 20863262 No abstract available.
Demographic study on the family planning behaviour of the German population: the importance of natural methods.
Freundl G, Frank P, Bauer S, Döring G. Freundl G, et al. Int J Fertil. 1988;33 Suppl:54-8. Int J Fertil. 1988. PMID: 2902030
A total of 1,267 women in the F.R.G., aged from 15 to 45 years, were interviewed about their family planning behavior and the importance of natural methods of family planning (NFP) in a representative demographic study. ...
A total of 1,267 women in the F.R.G., aged from 15 to 45 years, were interviewed about their family planning behavior and the importa …
[Results of a physician survey on the status of knowledge and attitude to natural family planning in West Germany 1988].
Döring G, Baur S, Frank-Herrmann P, Freundl G, Sottong U. Döring G, et al. Among authors: freundl g. Geburtshilfe Frauenheilkd. 1990 Jan;50(1):43-8. doi: 10.1055/s-2007-1026430. Geburtshilfe Frauenheilkd. 1990. PMID: 2311905 German.
[Has family planning behavior in West Germany changed since 1985?].
Freundl G, Baur S, Bremme M, Frank-Herrmann P, Godehardt E, Kunert J, Sottong U. Freundl G, et al. Geburtshilfe Frauenheilkd. 1991 Feb;51(2):127-34. doi: 10.1055/s-2007-1023688. Geburtshilfe Frauenheilkd. 1991. PMID: 2040411 German.
[Contraception in adolescents].
Freundl G, Frank-Herrmann P. Freundl G, et al. Gynakologe. 1991 Apr;24(2):81-6. Gynakologe. 1991. PMID: 1743570 Review. German.
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