Tsurumi, Junto
Matsui, Hiroyuki
Kubo, Takayoshi
Häusermann, Roger
Mitsui, Chikahiko
Okamoto, Toshihiro
Watanabe, Shun
Takeya, Jun http://orcid.org/0000-0001-7377-6043
Article History
Received: 31 January 2017
Accepted: 21 June 2017
First Online: 31 July 2017
Competing interests
: The authors declare no competing financial interests.