1. Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine , Kobe, Hyogo , Japan
2. Acute Care Medical Center, Hyogo Prefectural Kakogawa Medical Center , Kakogawa, Hyogo , Japan
3. Division of General Internal Medicine, Hyogo Prefectural Kakogawa Medical Center , Kakogawa, Hyogo , Japan
4. Division of Cardiovascular Medicine, Hyogo Prefectural Kakogawa Medical Center , Kakogawa, Hyogo , Japan