Funding for this research was provided by:
doctor's start-up fund of Taihe Hospital (2012QD09)
the 2016 Joint Diagnostic Medicine Research Project of Taihe Hospital (2016JZ02)
Text and Data Mining valid from 2019-09-10
Received: 19 June 2019
Accepted: 21 August 2019
First Online: 10 September 2019
Ethics approval and consent to participate
: Since all data are based on published literature, this study does not address any ethical issues.Not applicable.
: Not applicable.
: The authors of this work have nothing to disclose and the authors have declared that no competing interests exist.