The relationship between embryonic subchorionic hematoma and lower genital tract infections during early pregnancy 

ZHANG Biyun, CHEN Yingyue, HU Yang, FENG Miao, MIAO Zhulin, ZHONG Xingming
The Journal of Practical Medicine . 2023, (4): 451 -455 .  DOI: 10.3969/j.issn.1006⁃5725.2023.04.011