Funding for this research was provided by:
Kyowa Hakko Bio Co., Ltd.
Text and Data Mining valid from 2019-02-16
Received: 30 June 2018
Accepted: 6 February 2019
First Online: 16 February 2019
Compliance with ethical standards
: This study was funded by Kyowa Hakko Bio Co. Ltd. Takashi Suzuki, Masahiko Morita, and Akihito Nishimura are employees of Kyowa Hakko Bio Co. Ltd. None of these authors play any roles that might have affected the conclusions. The other co-authors have no conflict of interests to declare.