Text and Data Mining valid from 2019-11-12
First Online: 12 November 2019
Compliance with Ethical Standards
: No sources of funding were used to conduct this study or prepare this manuscript.
: C.K., Y.M., M. Konishi, E.A., H.S., R.S., H.N., S.K., Y.K., N.M., N.I., K.H., M. Kosuge, T.E., K.T., and K.K. have no conflicts of interest that are directly relevant to the content of this study.