Mutsushi Matsuyama

Department of Cell Biology and Anatomy, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake-shi, Aichi-ken Japan

Kazuo Kato

Department of Pathology, Chubu Rousai Hospital, 1-10-6 Komei, Minato-ku, Nagoya-shi, Aichi-ken 455-8530, Japan