China’s community-based strategy of universal preconception care in rural areas at a population level using a novel risk classification system for stratifying couples´ preconception health status
Crossref DOI link:
Update policy: https://doi.org/10.1007/SPRINGER_CROSSMARK_POLICY
Funding for this research was provided by:
This study was approved by Institutional Review Board of Chinese Association of Maternal and Child Health Studies.
unspecified valid from 2016-12-01