Funding for this research was provided by:
Beijing Nova Program (Z151100000315069)
National Bio-tech 823 Program (2012AA02A203)
Text and Data Mining valid from 2018-09-03
Received: 22 April 2018
Accepted: 18 August 2018
First Online: 3 September 2018
Compliance with ethical standards
: This study was conducted with the approval of the Institutional Ethical Standards Committee.
: The authors declare that there is no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent or substitute for it was obtained from all patients for being included in the study.
: All institutional and national guidelines for the care and use of laboratory animals were followed.