Funding for this research was provided by:
Grant-in aid for Scientific Research on Priority Area (17K01824)
Text and Data Mining valid from 2018-11-21
Received: 15 August 2018
Accepted: 8 November 2018
First Online: 21 November 2018
Ethics approval and consent to participate
: The Toranomon Hospital ethics committee approved this study (recipient number: 936). We obtained informed consent from all patients.
: Written informed consent was obtained from the patients’ guardian/parent/next of kin for the publication of this report and any accompanying images.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.