Articles académiques

  • The European Natural Family Planning Study Groups, Study Centre, Heinrich Heine University (Prof. Dr. G. Freundl) Düsseldorf, Germany.
    European multi-center study of natural family planning (1989-1995): efficacy and drop-out.
    Advances in Contraception 1999, 15: p.69-83.
  • C. Gnoth, D. Godehardt, E. Godehardt, P. Frank-Herrmann and G. Freundl
    Time to pregnancy: results of the German prospective study and impact on the management of infertility
    Human Reproduction 2003, 18 (9): p. 1959 – 1966.
  • Frank-Herrmann P., Heil J., Gnoth C., Toledo E., Baur S., Pyper C., Jenetzky E., Strowitzki T., Freundl G.
    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.
    Human Reproduction 2007, 22 (5): 1-10
  • Frank Hermann P.,Sottong U, Baur S, Raith-Paula E, Strowitzki T, Freundl G
    Natürliche Familienplanung Sensiplan®- eine moderne, verlässliche Méthode
    Der Gynäkologe 1 – 2011