Ota, Atsuhiko
Mase, Junji
Howteerakul, Nopporn
Rajatanun, Thitipat
Suwannapong, Nawarat
Yatsuya, Hiroshi
Ono, Yuichiro
Article History
Received: 15 May 2014
Accepted: 28 August 2014
First Online: 17 September 2014
Competing interests
: The authors declare no competing financial interests.