Shibamoto, Aya
Ogawa, Toru
Duyck, Joke
Vandamme, Katleen
Naert, Ignace
Sasaki, Keiichi
Article History
Received: 11 July 2017
Revised: 14 October 2017
Accepted: 16 November 2017
First Online: 13 March 2018
Competing interests
: The authors declare no competing interests.