NFP offers user-control, but requires discipline. Contraceptive update.
D000022:Abortion, Spontaneous; D001519:Behavior; D001695:Biology; D019411:Clinical Laboratory Techniques; D003267:Contraception; D003933:Diagnosis; D004194:Disease; D004493:Education; D005193:Family Planning Services; D008598:Menstruation; D009042:Motivation; D010061:Ovulation Detection; D010827:Physiology; D011248:Pregnancy Complications; D011584:Psychology; D012098:Reproduction; D012736:Sex Education; D012746:Sexual Abstinence
Abortion, Spontaneous; Behavior; Biology; Contraception; Contraceptive Effectiveness; Diseases; Education; Examinations And Diagnoses; Family Planning; Family Planning Training; Family Planning, Behavioral Methods; Fertile Period; Laboratory Examinations And Diagnoses; Laboratory Procedures; Motivation; Natural Family Planning; Ovulation Detection; Physiology; Pregnancy Complications; Psychological Factors; Reproduction; Sexual Abstinence; Training Programs