**Author details**

Akikazu Takada1 \*, Fumiko Shimizu<sup>2</sup> and Shinji Koba<sup>3</sup>

1 Hamamatsu University School of Medicine, Tokyo, Japan

2 Faculty of Life and Environmental Sciences, Showa Women's University, Tokyo, Japan

3 Division of Cardiology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan

\*Address all correspondence to: takadaa@mwd.biglobe.ne.jp

© 2019 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.
