Early pregnancy body mass index and spontaneous preterm birth in Northwest Russia: a registry-based study
Crossref DOI link: https://doi.org/10.1186/1471-2393-14-303
Published Online: 2014-09-04
Published Print: 2014-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Sharashova, Ekaterina E
Anda, Erik E
Grjibovski, Andrej M
License valid from 2014-09-04