Kurotani, Atsushi
Tokmakov, Alexander A.
Sato, Ken-Ichi
Stefanov, Vasily E.
Yamada, Yutaka
Sakurai, Tetsuya
Funding for this research was provided by:
Kobe University (281027)
Ministry of Education, Culture, Sports, Science and Technology of Japan (15K07083)
Article History
Received: 24 April 2019
Accepted: 8 August 2019
First Online: 20 August 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.