Funding for this research was provided by:
National Natural Science Foundation of China (81000076, 81670284)
Nanjing Science and Technology Project (201715057)
Nanjing Medical Science and Technique Development Foundation
Text and Data Mining valid from 2018-08-18
Received: 24 March 2018
Accepted: 8 August 2018
First Online: 18 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 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.