Yang, Bao
Yang, Chenlong
Sun, Yilin
Du, Jiang
Liu, Pinan
Jia, Guijun
Jia, Wang
Zhang, Yazhuo
Wang, Jisheng
Xu, Yulun
Wang, Shuo https://orcid.org/0000-0002-4854-140X
Article History
Received: 4 May 2018
Accepted: 19 July 2018
First Online: 14 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethics Committee of Beijing Tiantan Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.