Funding for this research was provided by:
a Grant-in-Aid for Scientific Research (19K09718)
Text and Data Mining valid from 2019-11-29
Received: 24 September 2019
Accepted: 12 November 2019
First Online: 29 November 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This study was approved by the Institutional Ethics Committee of Ohguchi East General Hospital.
: Informed consent was obtained from all individual participants included in the study.