The changing situation about maternal age, risk factors and pregnancy outcomes after the two-child policy: a retrospective cohort study
@article{APM40449, author = {Xiaohui Teng and Mc Intyre Shane and Shilei Pan}, title = {The changing situation about maternal age, risk factors and pregnancy outcomes after the two-child policy: a retrospective cohort study}, journal = {Annals of Palliative Medicine}, volume = {9}, number = {3}, year = {2020}, keywords = {}, abstract = {}, issn = {2224-5839}, url = {https://apm.amegroups.org/article/view/40449} }