1. Department of Dermatology; Tottori University School of Medicine; Yonago 683 Japan Director: Prof. Shuhei Shimao
2. Department of Dermatology; Wayne State University School of Medicine; Detroit Michigan 48421 USA Director: Prof. Ken Hashimoto
3. Department of Dermatology; Hokkaido University School of Medicine; Sapporo 060 Japan Director: Prof. Yusho Miura