Lin, Letao
Wang, Chengen
Pei, Renguang
Guan, Haitao
Wang, Jian
Yang, Min
Tong, Xiaoqiang
Zou, Yinghua http://orcid.org/0000-0002-7538-5924
Article History
Received: 13 June 2018
Accepted: 7 August 2018
First Online: 12 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this retrospective study, formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.