Funding for this research was provided by:
National Natural Science Foundation of China (81672141)
Text and Data Mining valid from 2019-04-10
Received: 19 November 2018
Accepted: 28 March 2019
First Online: 10 April 2019
Compliance with ethical standards
: The retrospective study was approved by the Institutional Review Committee of Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China. And written informed consents were obtained.
: The authors declare that they have no conflict of interest.