Funding for this research was provided by:
National Natural Science Foundation of China (81521004, 81422042, 81373090)
National key research and development program of Chin
Text and Data Mining valid from 2018-09-10
Received: 8 May 2018
Revised: 15 July 2018
Accepted: 31 July 2018
First Online: 10 September 2018
Compliance with ethical standards
: The authors declare that they have 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 to be included in the study, or the equivalent, was obtained from all patients.