Ovulationstermin und Konzeptionsfähigkeit bei der Frau

Ogino ovulation timing conception, Ogino Knaus calendar method historical, ovulation timing and female fertility 1930, rhythm method scientific basis Ogino, fertile window calculation menstrual cycle, historical fertility awareness methods, ovulation date prediction natural family planning, Konzeptionsfähigkeit ovulation German gynecology, calendar-based fertility awareness method origin, menstrual cycle length ovulation prediction, natural conception timing historical research, Ogino method periodic abstinence

DOI 10.1007/BF01705918 10.1007/BF01705918