Cite
MLA Citation
Xiaolei Zhang et al.. “Changing trends of adverse pregnancy outcomes with maternal age in primipara with singleton birth: A join point analysis of a multicenter historical cohort study in China in 2011‐2012.” Acta obstetricia et gynecologica Scandinavica, vol. 98, 2019, pp. 997–1003. http://access.bl.uk/ark:/81055/vdc_100088131059.0x000063