Contraception; Endometrium/cytology; Menstrual Cycle; Vaginal Smears; Adult; Contraceptives, Oral, Hormonal; Female; Humans; Intrauterine Devices; Middle Aged

Age Distribution; Age Factors; Anatomy; Biology; Cervix--analysis; Contraception; Contraceptive Methods Chosen; Contraceptive Usage; Cytology; Demographic Factors; Endometrial Effects--analysis; Endometrium; Examinations And Diagnoses; Family Planning; Fertility; Genital Effects, Female; Genitalia; Genitalia, Female; Histology; Incidence; Laboratory Examinations And Diagnoses; Measurement; Menstrual Cycle; Menstruation; Physiology; Population; Population Characteristics; Population Dynamics; Reproduction; Reproductive Behavior; Research Methodology; Urogenital Effects; Urogenital System; Uterine Effects; Uterus