Ishii, Kentaro
Noda, Masanori
Yagi, Hirokazu
Thammaporn, Ratsupa
Seetaha, Supaporn
Satoh, Tadashi
Kato, Koichi
Uchiyama, Susumu
Article History
Received: 1 October 2015
Accepted: 13 November 2015
First Online: 14 December 2015
Competing interests
: The authors declare no competing financial interests.