Zhang, Congya
Wang, Guyan
Zhou, Hui
Lei, Guiyu
Yang, Lijing
Fang, Zhongrong
Shi, Sheng
Li, Jun
Han, Zhiyan
Song, Yunhu
Liu, Sheng
Funding for this research was provided by:
National Natural Science Foundation of China (81770414)
Chinese Academy of Medical Sciences (CN) Innovation Fund for Medical Sciences (2017-I2M-003)
Article History
Received: 28 May 2019
Accepted: 18 November 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: The study was designed retrospectively. Fuwai Hospital Ethics Committee waivered the need for informed consent regarding the retrospective data and approved this study.
: Not applicable.
: The authors declare that they have no competing interests.