Xing, Wenzhao
Xie, Peng
Wang, Linjie
Liu, Changcheng
Cui, Jian
Zhang, Zhiguo
Sun, Liang
Funding for this research was provided by:
Health and Family Planning Commission of Hebei Province (20150722)
Article History
Received: 11 September 2017
Accepted: 11 April 2018
First Online: 18 April 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of the Third Hospital of Hebei Medical University and conducted in accordance with the Declaration of Helsinki. All subjects signed consent forms.
: The subjects gave consent for any form of information about themselves to be published in BMC Surgery.
: The authors declare that they have no competing interests.
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