Ohtani, Ryo
Nakaya, Manabu
Ohmagari, Hitomi
Nakamura, Masaaki
Ohta, Kazuchika
Lindoy, Leonard F.
Hayami, Shinya
Article History
Received: 23 June 2015
Accepted: 16 October 2015
First Online: 16 November 2015
Competing interests
: The authors declare no competing financial interests.