title: [Comparative study of 4 microdose progestagen - only non-stop oral contraceptives (lynestrenol, D-norgestrel, norethisterone acetate, norgestrienone)  on 483 women and 4358 cycles)].
authors.forename: J H
authors.initials: JH
authors.lastname: Soutoul
authors.forename: M
authors.initials: M
authors.lastname: Renaud
authors.forename: C S
authors.initials: CS
authors.lastname: Jallatte
authors.forename: J
authors.initials: J
authors.lastname: Bertrand
mesh_terms: D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D016912:Levonorgestrel; D008234:Lynestrenol; D009640:Norethindrone; D045167:Progesterone Congeners; D012106:Research
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D045167:Progesterone Congeners; D016912:Levonorgestrel; D008234:Lynestrenol; D009640:Norethindrone
keywords: Clinical Research; Comparative Studies; Contraception; Contraceptive Agents, Female--indications; Contraceptive Agents, Progestin--indications; Contraceptive Agents--indications; Contraceptive Effectiveness; Evaluation; Family Planning; Levonorgestrel; Lynestrenol; Norethindrone; Norethindrone Acetate; Oral Contraceptives; Progestins, Low-dose--indications; Research Methodology; Studies; Use-effectiveness