title: [The risks of the natural family planning methods].
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology; D002582:Cervix Mucus; D000013:Congenital Abnormalities / Q000453:epidemiology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008597:Menstrual Cycle; D012252:Natural Family Planning Methods; D010061:Ovulation Detection / Q000379:methods; D011247:Pregnancy; D011446:Prospective Studies; D012306:Risk
vernacular_title: Les risques des méthodes de continence périodique.