1. Department of Clinical Immunology and Rheumatology/Infectious Disease, Kyushu University Hospital , Fukuoka, Japan
2. Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Sciences , Fukuoka, Japan
3. Department of Cancer Stem Cell Research, Kyushu University Graduate School of Medical Sciences , Fukuoka, Japan
4. Department of Internal Medicine, Kyushu University Beppu Hospital , Oita, Japan
5. Department of Medical Education, Faculty of Medical Sciences, Kyushu University Graduate School of Medical Sciences , Fukuoka, Japan