title: TwoDay Algorithm in predicting fertile time.
authors.forename: Rafael
authors.initials: R
authors.lastname: Mikolajczyk
mesh_terms: D000465:Algorithms; D005193:Family Planning Services / Q000379:methods*; D005260:Female; D005544:Forecasting; D006801:Humans; D010060:Ovulation; D013997:Time Factors