title: [Use of contraceptives in women under 18: data of the Center for Family Planning, University of Rome].
authors.forename: E
authors.initials: E
authors.lastname: Calzolari
authors.forename: A
authors.initials: A
authors.lastname: Bartoleschi
authors.forename: F
authors.initials: F
authors.lastname: Nicolaci
mesh_terms: D000293:Adolescent; D000367:Age Factors; D003267:Contraception; D003268:Contraception Behavior; D003710:Demography; D005193:Family Planning Services; D007722:Health Knowledge, Attitudes, Practice; D008572:Menarche; D008597:Menstrual Cycle; D008598:Menstruation; D011153:Population; D011154:Population Characteristics; D012098:Reproduction; D012106:Research
keywords: Adolescents; Adolescents, Female; Age Factors; Clinical Research; Contraception; Contraceptive Usage; Demographic Factors; Family Planning; Menarche; Menstrual Cycle; Menstruation; Population; Population Characteristics; Previous Practice; Reproduction; Research Methodology; Youth