Petra Frank‐Herrmann

1. 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
   2007/02/20 by Petra Frank‐Herrmann, Joerg Heil, Christian Gnoth +6 · 5 citations
   Medicine · #Ovarian function and disorders #Reproductive Health and Technologies #Menstrual Health and Disorders
2. 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
   1997/06/01 by P. Frank-Herrmann, Petra Frank‐Herrmann, Günter Freundl +7 · 2 citations
   Health Professions · #Infant Health and Development
3. Effectiveness and acceptability of the sYmptothermal method of natural family planning in Germany
   1991/12/01 by Petra Frank-Herrmann, Petra Frank‐Herrmann, Günter Freundl +11 · 2 citations
   Medicine · #Pregnancy and Medication Impact #Reproductive Health and Contraception