1. Laboratory of Biochemistry, Gifu Pharmaceutical University, Mitahora-higashi, Gifu 502-8585, Japan
2. Department of Internal Medicine, Gihoku General Hospital, Takatomi-cho, Gifu 501-2105, Japan
3. Department of Urology, Gifu Prefectural Gifu Hospital, Noishiki, Gifu 500-8717, Japan