1 Department of Pharmacology, School of Medicine, International University of Health and Welfare, 4-2 Kozunomori, Narita, Chiba, 286-8686, Japan.
2 Department of Pharmacology, School of Medicine, International University of Health and Welfare, 4-2 Kozunomori, Narita, Chiba, 286-8686, Japan. hkobori@iuhw.ac.jp.