Hashizume, Hideki
Takahashi, Yoshiaki
Masuda, Tohru
Ohba, Shun-ichi
Ohishi, Tomokazu
Kawada, Manabu
Igarashi, Masayuki
Article History
Received: 21 April 2017
Revised: 13 June 2017
Accepted: 25 June 2017
First Online: 26 July 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.