Chen, Chao-feng
Liu, Mei-jun
Jin, Chao-lun
Gao, Xiao-fei
Liu, Xiao-hua
Xu, Yi-zhou http://orcid.org/0000-0002-8870-5472
Article History
Received: 2 November 2019
Accepted: 23 December 2019
First Online: 31 December 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: This study was approved by the Hangzhou First People’s Hospital ethics committee (E01/042/17) and conforms to the guiding principles of the Declaration of Helsinki.