| Literature DB >> 504981 |
Abstract
Keywords: Biology; Contraception; Contraceptive Implants; Contraceptive Methods; Endocrine System; Family Planning; Hormones; Implantation--therapeutic use; Physiology; Pregnancy; Pregnancy, First Trimester; Progestational Hormones; Progesterone--administraction and dosage; Reproduction; Silicone Ring
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Year: 1979 PMID: 504981 DOI: 10.1038/scientificamerican1279-66
Source DB: PubMed Journal: Sci Am ISSN: 0036-8733 Impact factor: 2.142