Wang, Hui
Qian, Jiantong
Xia, Xiaojing
Ye, Ben
Article History
Received: 9 October 2019
Accepted: 4 January 2020
First Online: 3 February 2020
Compliance with ethical standards
:
: This study was approved by the Ethics Committee of Heze Mudan People’s Hospital and conducted in accordance with the Declaration of Helsinki. Written informed consents were obtained from all patients.
: The authors declare that they have no competing interests.