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1471-0528.13114
1471-0528.13114
http://dx.doi.org/10.1111/1471-0528.13114
Hormonal contraceptive use before and after conception in relation to preterm birth and small for gestational age: an observational cohort study.
P356
Q35449176-14D0F0D2-88F5-4D5E-AF76-06886542346B
P356
1471-0528.13114
http://dx.doi.org/10.1111/1471-0528.13114