Ueta, Mayumi
Kaniwa, Nahoko
Sotozono, Chie
Tokunaga, Katsushi
Saito, Yoshiro
Sawai, Hiromi
Miyadera, Hiroko
Sugiyama, Emiko
Maekawa, Keiko
Nakamura, Ryosuke
Nagato, Masaki
Aihara, Michiko
Matsunaga, Kayoko
Takahashi, Yukitoshi
Furuya, Hirokazu
Muramatsu, Masaaki
Ikezawa, Zenrou
Kinoshita, Shigeru
Article History
Received: 28 November 2013
Accepted: 14 April 2014
First Online: 30 April 2014
Competing interests
: The authors declare no competing financial interests.