Takenouchi, Norihiro
Tanaka, Masakazu
Sato, Teruaki
Yao, Jinchun
Fujisawa, Jun-ichi
Izumo, Shuji
Kubota, Ryuji
Matsuura, Eiji
Article History
Received: 2 August 2019
Revised: 17 February 2020
Accepted: 12 March 2020
First Online: 13 April 2020
Compliance with ethical standards
: The institutional review boards of the authors’ institutions approved this research and written informed consent was obtained from all study participants.
: The authors declare that they have no competing interests.