Affiliation: | 1. Department of Information and Computer Sciences, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan;2. Department of Internal Medicine, Osaka Police Hospital, Tennoji-ku, Osaka 543, Japan;3. Department of Electrical Engineering, Faculty of Engineering, Tottori University, Tottori, Tottori 680, Japan;4. The First Department of Medicine, Osaka University Medical School, Fukushima-ku, Osaka 553, Japan;5. Department of Medicine, Osaka Kosei-Nenkin Hospital, Fukushima-ku, Osaka 553, Japan |