1. Division of Respiratory Medicine, Department of Medicine, Ibaraki Prefectural Central Hospital Ibaraki Cancer Center Kasama Japan
2. Division of Infectious Diseases, Department of Medicine, Ibaraki Prefectural Central Hospital Ibaraki Cancer Center Kasama Japan
3. Department of Infection and Immunity, School of Medicine Jichi Medical University Shimotsuke Japan
4. Department of Dermatology, Ibaraki Prefectural Central Hospital Ibaraki Cancer Center Kasama Japan