Qiu, Meiguang
Shi, Zhanjun
Xiao, Jun
Zhang, Xuming
Ling, Shishui
Ling, Hao
Article History
Received: 21 May 2015
Accepted: 12 November 2015
First Online: 21 November 2015
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.
: This study was conducted in accordance with the declaration of Helsinki. This study was conducted with approval from the Ethics Committee of Southern Medical University. Written informed consent was obtained from all participants.
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