title: Effect of switching with oral contraceptives.
authors.forename: S A
authors.initials: SA
authors.lastname: Wassef
authors.forename: G
authors.initials: G
authors.lastname: Sami
authors.forename: E A
authors.initials: EA
authors.lastname: Hamid
mesh_terms: D000568:Amenorrhea; D001695:Biology; D002715:Chlormadinone Acetate; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003278:Contraceptives, Oral, Hormonal; D004194:Disease; D004717:Endometrium; D004997:Ethinyl Estradiol; D005193:Family Planning Services; D005835:Genitalia; D005836:Genitalia, Female; D006470:Hemorrhage; D006653:Histology; D015994:Incidence; D008595:Menorrhagia; D008599:Menstruation Disturbances; D008796:Metrorrhagia; D010827:Physiology; D045167:Progesterone Congeners; D012106:Research; D012107:Research Design; D012816:Signs and Symptoms; D014566:Urogenital System; D014599:Uterus
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003278:Contraceptives, Oral, Hormonal; D045167:Progesterone Congeners; D002715:Chlormadinone Acetate; D004997:Ethinyl Estradiol
keywords: Amenorrhea; Biology; Bleeding; Chlormadinone Acetate; Comparative Studies; Contraception; Contraceptive Agents; Contraceptive Agents, Estrogen; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Methods--side effects; Diseases; Endometrial Effects; Endometrium; Ethinyl Estradiol; Family Planning; Genitalia; Genitalia, Female; Histology; Incidence; Measurement; Menorrhagia; Menstruation Disorders; Metrorrhagia; Norethindrone Acetate; Oral Contraceptives, Combined; Oral Contraceptives--side effects; Physiology; Progestins, Low-dose; Research Methodology; Signs And Symptoms; Studies; Urogenital System; Uterine Effects; Uterus