Li, Jiahao
Li, Huixian
Wu, Huiying
Niu, Huilin
Li, Haibo
Pan, Jing
Yang, Jiliang
Tan, Tianbao
Hu, Chao
Xu, Tao
Zhang, Xiaohong
Zheng, Manna
Li, Kuanrong
Zou, Yan
Yang, Tianyou
Article History
Received: 20 September 2019
Accepted: 30 March 2020
First Online: 9 May 2020
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of Guangzhou Women and Children’s Medical Centre. The need for informed consent was waived on account of the retrospective nature of the demographic, clinical, and outcome data. All patients’ data were de-identified prior to the analysis.
: Not applicable.
: The authors declare that they have no competing interests.