Lv, Ping-Ping
Jin, Min
Rao, Jin-Peng
Chen, Jian
Wang, Li-Quan
Huang, Chang-Chang
Yang, Song-Qing
Yao, Qiu-Ping
Feng, Lei
Shen, Jin-Ming
Feng, Chun http://orcid.org/0000-0002-0938-7331
Article History
Received: 18 March 2020
Accepted: 8 June 2020
First Online: 8 July 2020
Ethics approval and consent to participate
: The present study was approved by the Ethics Committee of the Second Affiliated Hospital of Zhejiang University School of Medicine (IR2019001059). Because this was a retrospectively observational study with no intervention, formal ethical approval and written consent were not required.
: Not applicable.
: The authors declare that they have no competing interests.