Zhang Yuan, Han Zhenyan, Gao Qian, Bai Xiaoyi, Hou Hongying
Department of Obstetrics, the Third Affiliated Hospital of Sun Yat-senn University, Guangzhou, China.
Int J Gynaecol Obstet. 2020 Sep;150(3):416-417. doi: 10.1002/ijgo.13153. Epub 2020 May 6.