Wang, Shu http://orcid.org/0000-0002-5914-0804
Zhao, Meng
Li, Tianfu
Zhang, Chunsheng
Zhou, Jian
Wang, Mengyang
Wang, Xiongfei
Ma, Kaiqiang
Luan, Guoming
Guan, Yuguang http://orcid.org/0000-0001-9945-2872
Article History
Received: 19 December 2019
Accepted: 2 July 2020
First Online: 6 July 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: None.
: The local ethics committee approved this study. Written informed consent was provided by the patients or their guardians. All patients agreed to the procedure and to the use of their anonymized data for research purposes. This study was conducted following the 1964 Helsinki Declaration and its later amendments.