1. Department of Infectious, Respiratory, and Digestive Medicine University of the Ryukyus Graduate of School of Medicine Nishihara Japan
2. Department of Respiratory Medicine Hokubu Chiku Ishikai Hospital Nago Japan
3. Department of Respiratory Medicine National Hospital Organization Okinawa National Hospital Ginowan Japan
4. Department of Pathology Urasoe General Hospital Urasoe Japan
5. Department of Pathology Okinawa Red Cross Hospital Naha Japan