Zhang, Hongtao
Shen, Yanguang
Pan, Jingjing
Wang, Haiyi
Zhong, Yan
Wang, Yingwei
Ye, Huiyi
Article History
Received: 4 February 2018
Accepted: 2 May 2018
First Online: 12 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants performed by any of the authors. Each author has participated sufficiently in any submission to take public responsibility for its content. All procedures were performed in accordance with ethical standards of the Declaration of Helsinki. The study was approved by the hospital ethical committee. Written informed consent was obtained from each patient.