Hormonal contraceptive use before and after conception in relation to preterm birth and small for gestational age: an observational cohort study
Publisher: John Wiley & Sons Inc
E-ISSN: 1471-0528|122|10|1349-1361
ISSN: 1470-0328
Source: BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Vol.122, Iss.10, 2015-09, pp. : 1349-1361
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Abstract