Li, Ke-Liang
Wang, Ben-Zhen
Li, Zi-Pu
Li, Yi-Lei
Liang, Jing-Jing
Article History
Received: 8 October 2018
Accepted: 20 March 2019
First Online: 24 April 2019
Compliance with ethical standards
:
: The author(s) declares that they have no conflict of interest.
: This study was approved by the Ethics Committee of Rizhao People’s Hospital (code number: rzrmyy2015llpj002).