Zhu, Xianting
Zhao, Yuling
Hou, Wei
Guo, Ling
Article History
Received: 18 March 2019
Revised: 15 April 2019
Accepted: 15 April 2019
First Online: 29 April 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Ethics Committee of the Yidu Central Hospital of Wei Fang.
: Not applicable.