Zhan, Yi-Yang http://orcid.org/0000-0003-0894-8595
Kojima, Tatsuo http://orcid.org/0000-0001-7799-8153
Ishii, Kentaro http://orcid.org/0000-0003-1722-2673
Takahashi, Satoshi http://orcid.org/0000-0002-0889-5449
Haketa, Yohei
Maeda, Hiromitsu http://orcid.org/0000-0001-9928-1655
Uchiyama, Susumu http://orcid.org/0000-0002-5181-179X
Hiraoka, Shuichi http://orcid.org/0000-0002-9262-4747
Article History
Received: 22 October 2018
Accepted: 12 March 2019
First Online: 29 March 2019
Competing interests
: The authors declare no competing interests.