**Author details**

Ryu Nakadate1 and Makoto Hashizume2 \*


\*Address all correspondence to: mhashi@dem.med.kyushu-u.ac.jp

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
