Zhang, Yong
Guo, Jin
Duanmu, Yangyang
Zhang, Chenxin
Zhao, Wei
Wang, Ling
Cheng, Xiaoguang
Veronese, Nicola
Cafarelli, Francesco Pio
Guglielmi, Giuseppe
Funding for this research was provided by:
Beijing Municipal Health Bureau (2009-2-03)
Article History
Received: 10 May 2018
Accepted: 10 August 2018
First Online: 20 August 2018
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee 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.