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Abstract
Mesh: See more » Contraceptives, OralFemaleHumansMenstruation/drug effectsNorgestrel/administration & dosageOvulation/drug effectsPregnancyProgestins/administration & dosage
Substances: See more » Contraceptives, OralProgestinsNorgestrel
Year: 1972 PMID: 5040701 PMCID: PMC1785662 DOI: 10.1136/bmj.3.5820.190
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447