Nagaoka, Noriyuki
Yoshihara, Kumiko
Feitosa, Victor Pinheiro
Tamada, Yoshiyuki
Irie, Masao
Yoshida, Yasuhiro
Van Meerbeek, Bart
Hayakawa, Satoshi
Article History
Received: 1 December 2016
Accepted: 28 February 2017
First Online: 30 March 2017
Competing interests
: The authors declare no competing financial interests.