Funding for this research was provided by:
Japan Agency for Medical Research and Development
Text and Data Mining valid from 2018-11-17
Received: 15 May 2018
Accepted: 10 November 2018
First Online: 17 November 2018
Compliance with ethical standards
: This study was approved by the institutional ethics committee in Okayama University Hospital and informed consent was obtained for each patient from the legal guardian of the patients and/or themselves. All methods were performed in accordance with the relevant guidelines and regulations.
: The authors declare that they have no conflict of interest.
: The institutional Review Board of Okayama University Hospital approved this study.
: Informed consent was obtained for each patient from the legal guardian of the patients and/or themselves.