Analysis of pregnancy complications and adverse pregnancy outcomes of elderly primiparas
Jin-mei ZENG, Ri-ling CHEN, Jie-yun HE, Dong-mei LIANG, Ting-yu LIAN, Ming-juan YIN, Jia-wei RAO, Jin-dong NI
JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE) . 2021, (11): 1485 -1490 .  DOI: 10.3969/j.issn.1674-8115.2021.11.012