Funding for this research was provided by:
JSPS KAKENHI (16K19882)
Text and Data Mining valid from 2019-09-18
Received: 5 June 2019
Accepted: 5 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This study was approved by the ethics committee of IBRI.
: Informed consent was obtained from all individual participants included in the study.
: Yasuhiko Ikari is an employee of CMIC Co., Ltd., Tokyo, Japan. Hiroyuki Nishida is an employee of Micron, Inc., Tokyo, Japan. All other authors declare that they have no competing interests.