Yamamoto, Toshiyuki http://orcid.org/0000-0002-9484-3505
Shimojima, Keiko
Ondo, Yumiko
Imai, Katsumi
Chong, Pin Fee
Kira, Ryutaro
Amemiya, Mitsuhiro
Saito, Akira
Okamoto, Nobuhiko
Article History
Received: 7 March 2016
Revised: 13 June 2016
Accepted: 17 June 2016
First Online: 18 August 2016
Competing interests
: The authors declare no conflict of interest.