Arai, Yohei
Takahashi, Daiei
Asano, Kenichi
Tanaka, Masato
Oda, Mayumi
Ko, Shigeru B. H.
Ko, Minoru S. H.
Mandai, Shintaro
Nomura, Naohiro
Rai, Tatemitsu
Uchida, Shinichi
Sohara, Eisei
Article History
Received: 19 December 2016
Accepted: 17 March 2017
First Online: 20 April 2017
Competing interests
: The authors declare no competing financial interests.