1. Department of Environmental Medicine, Kochi Medical School, Kochi University, Kochi, Japan. jm-kaorikomori@kochi-u.ac.jp
2. Department of Otolaryngology, Head and Neck Surgery, Kochi Medical School, Kochi University, Kochi, Japan.
3. Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kochi, Japan.
4. Rheumatic Disease Centre, Kurashiki Medical Center, Kurashiki, Japan.
5. Division of Haematology and Rheumatology, Department of Medicine, Nihon University, Tokyo, Japan.
6. Department of Environmental Medicine, Kochi Medical School, Kochi University, Kochi, Japan.