1997 Study about NFP by Frank Herrmann … [Read more...]
Determination of the fertile window: Reproductive competence of women – European cycle databases
Abstract of Frank Herrmann study from 2005 … [Read more...]
Contraceptive Decision-Making: Background and Outcomes of Contraceptive Methods
Contraceptive Decision-Making: Background and Outcomes of Contraceptive Methods … [Read more...]
Fertility awareness-based methods for contraception (Review)
Fertility awareness-based methods for contraception (Review) … [Read more...]
Fertility Awareness-Based Methods: Another Option for Family Planning
Fertility Awareness Based Methods study … [Read more...]
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
Frank Herrmann's 2007 study in the Journal of Human Reproduction … [Read more...]