Ueta, Mayumi
Tokunaga, Katsushi
Sotozono, Chie
Sawai, Hiromi
Yoon, Kyung-Chul
Kum Kim, Mee
Yul Seo, Kyoung http://orcid.org/0000-0002-9855-1980
Joo, Choun-Ki
Tashiro, Kei
Kinoshita, Shigeru
Article History
Received: 8 April 2015
Revised: 2 May 2015
Accepted: 11 May 2015
First Online: 16 July 2015
Competing interests
: The authors declare no conflict of interest.