Fang, Fang
Wei, Hongyan
Wang, Kunling
Tan, Long
Zhang, Wanqi
Ding, Li
Liu, Tong
Shan, Zhongyan
Zhu, Mei
Article History
Received: 31 January 2018
Accepted: 15 May 2018
First Online: 2 June 2018
Compliance with ethical standards
:
: The study was approved by the ethics committee of the First Hospital of China Medical University and was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. Written informed consent was obtained from all participants.
: None.