Zhou, Yan
He, Ping
Xie, Xuhua
Sun, Changyu
Article History
Received: 11 January 2018
Accepted: 11 June 2018
First Online: 15 June 2018
Compliance with ethical standards
:
: The authors declare no competing or financial interests.
: This study was approved by the Ethics Committee of Zhengzhou University and written informed consent was obtained for the use of tissue samples from all participants enrolled in this study.