Funding for this research was provided by:
The National Science Foundation for Young Scientists of China (81500585)
Nanjing Medical Science and Technique Development Foundation (QRX17120)
Text and Data Mining valid from 2018-05-14
Received: 8 August 2017
Accepted: 29 November 2017
First Online: 14 May 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.
: All studies were approved by the Ethical Committee of Nanjing Drum Tower Hospital. Additional informed consent was obtained from all individual participants for whom identifying information is included in this article.