Zhou, Zhi
Li, Xudong
Jin, Yi
Zheng, Yumin
Jia, Shuhong
Jiao, Jinsong
Zheng, Xiaoyun
Article History
Received: 6 January 2019
Accepted: 19 April 2019
First Online: 30 April 2019
Compliance with ethical standards
: This study was approved by the China-Japan Friendship Hospital, and study procedures were followed in accordance with the ethical standards of the hospital. Written informed consent was obtained from all of the subjects prior to any study procedures.
: The authors declare that they have no conflict of interest.