1. Department of Microbiology; Faculty of Medicine; Kagawa University; Kagawa Japan
2. Honbu Sankei Co. Ltd.; Chuou-ku Osaka Japan
3. Department of Cellular and Molecular Medicine; Wakayama Medical University Graduate School of Medicine; Wakayama Japan
4. Faculty of Nursing; Shikoku University; Tokushima Japan
5. Faculty of Fisheries; Kagoshima University; Kagoshima-shi Kagoshima Japan