1. Department of Dermatology; Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences; Okayama Japan
2. Department of Dermatology; Okayama City Hospital; Okayama Japan
3. Department of Rheumatology; Okayama City Hospital; Okayama Japan
4. Department of Pathology; Okayama City Hospital; Okayama Japan
5. Department of Dermatology; Kawasaki Hospital; Okayama Japan