Yamashita, Makiko
Kitano, Shigehisa
Aikawa, Hiroaki
Kuchiba, Aya
Hayashi, Mitsuhiro
Yamamoto, Noboru
Tamura, Kenji
Hamada, Akinobu
Article History
Received: 20 August 2015
Accepted: 18 December 2015
First Online: 27 January 2016
Competing interests
: The authors declare no competing financial interests.