title: [Frequency of intercourse, parental ages, and their relation with fecundability].
mesh_terms: D001519:Behavior; D003075:Coitus; D003267:Contraception; D003710:Demography; D005193:Family Planning Services; D005298:Fertility; D005306:Fertilization; D008423:Maternal Age; D008597:Menstrual Cycle; D010061:Ovulation Detection; D011153:Population; D011157:Population Dynamics; D012098:Reproduction; D012106:Research; D012189:Retrospective Studies; D012725:Sexual Behavior
keywords: Behavior; Coitus; Contraception; Demographic Factors; Fertility; Fertilization--statistics; Maternal Age; Menstrual Cycle; Ovulation Detection; Population; Population Dynamics; Pregnancy, Planned; Reproduction; Reproductive Behavior; Research Methodology; Retrospective Studies; Sex Behavior; Studies
vernacular_title: Frequence des rapports sexuels, age des parents et leurs relations avec la fecondabilite.