Article History
First Online: 26 November 2018
Compliance with Ethical Standards
:
: The authors received no financial support for the research, authorship, and/or publication of this article.
: Hiroki Nakayama is an employee of Astellas Pharma Inc. Naoki Matsumaru and Katsura Tsukamoto declare no conflicts of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
Free to read: This content has been made available to all.