Wang, Huijuan
Li, Ruili
Zhou, Yawen
Wang, Yanming
Cui, Jin
Nguchu, Benedictor Alexander
Qiu, Bensheng
Wang, Xiaoxiao
Li, Hongjun
Article History
Received: 28 December 2017
Revised: 21 April 2018
Accepted: 1 May 2018
First Online: 21 May 2018
Compliance with ethical standards
: All procedures performed in the studies involving human participants were in accordance with the ethical standards of the research ethics committee of the Beijing Youan Hospital, Capital Medical University, and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all individual participants included in the study.