| Literature DB >> 5550233 |
I Brosens, A Van Assche, P Wijnants.
Abstract
Entities:
Keywords: Cervical Effects; Clinical Research; Comparative Studies; Contraception; Contraceptive Agents; Contraceptive Agents, Estrogen; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Effectiveness; Cytologic Effects; Endometrial Effects; Ethinyl Estradiol; Family Planning; Levonorgestrel; Oral Contraceptives; Research Methodology; Studies; Use-effectiveness; Uterine Effects
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Year: 1971 PMID: 5550233
Source DB: PubMed Journal: Geburtshilfe Frauenheilkd ISSN: 0016-5751 Impact factor: 2.915