Watanabe, Shun http://orcid.org/0000-0001-7377-6043
Sugawara, Hirotaka
Häusermann, Roger http://orcid.org/0000-0002-9578-2409
Blülle, Balthasar http://orcid.org/0000-0001-9982-1033
Yamamura, Akifumi http://orcid.org/0000-0003-1790-6098
Okamoto, Toshihiro http://orcid.org/0000-0002-4783-0621
Takeya, Jun
Article History
Received: 22 March 2018
Accepted: 19 June 2018
First Online: 18 July 2018
Competing interests
: The authors declare no competing interests.