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Authors
Akitsu, Aoi
Ishigame, Harumichi
Kakuta, Shigeru
Chung, Soo-hyun
Ikeda, Satoshi
Shimizu, Kenji
Kubo, Sachiko
Liu, Yang
Umemura, Masayuki
Matsuzaki, Goro
Yoshikai, Yasunobu
Saijo, Shinobu
Iwakura, Yoichiro
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Article History
Received: 24 January 2015
Accepted: 13 May 2015
First Online: 25 June 2015
Change Date: 27 July 2015
Change Type: Update
Change Details: This Article was originally published under NPG's License to Publish, which has now been changed to CC-BY 4.0. The PDF and HTML versions of the paper have been modified accordingly.
Competing interests
: The authors declare no competing financial interests.
