Maruyama, Yukio
Higuchi, Chieko
Io, Hiroaki
Wakabayashi, Keiichi
Tsujimoto, Hiraku
Tsujimoto, Yasushi
Yuasa, Hidemichi
Ryuzaki, Munekazu
Ito, Yasuhiko
Nakamoto, Hidetomo
Article History
Received: 22 June 2019
Accepted: 23 August 2019
First Online: 17 October 2019
Ethics approval and consent to participate
: No ethical approval was required because this study did not involve the use of confidential personal data or patient interventions.
: Not applicable.
: YM has received scholarship funds from Baxter International, Inc. and Terumo Corporation. YI belonged to a department endowed by Baxter International, Inc. The other authors declare that they have no competing interests.