1. Rheumatic Disease Center, Sasebo Chuo Hospital, Sasebo, Japan
2. Department of Respiratory Medicine, Sasebo Chuo Hospital, Sasebo, Japan
3. Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
4. Department of Infectious Diseases, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
5. Department of Virology, Institute of Tropical Medicine, Dejima Infectious Disease Research Alliance, Nagasaki University, Nagasaki, Japan