1. Department of Medicine, John A. Burns School of Medicine University of Hawai'i Honolulu Hawaii USA
2. Department of General Medicine Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
3. Department of Pathology Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
4. Division of Pathophysiology Okayama University Graduate School of Health Sciences Okayama Japan