**Author details**

Hiromitsu Tanaka, Morimasa Wada, Nguyen Huu Tung, Shunsuke Fujii, Takuhiro Uto and Yukihiro Shoyama\*

\*Address all correspondence to: shoyama@niu.ac.jp

Faculty of Pharmaceutical Sciences, Nagasaki International University, Huis Ten Bosch, Sasebo, Nagasaki, Japan
