1. Division of Dermatology, Department of Medicine, Faculty of Medicine Chulalongkorn University Bangkok Thailand
2. Institute of Dermatology Ministry of Public Health Bangkok Thailand
3. Department of Dermatology, Faculty of Medicine, Siriraj Hospital Mahidol University Bangkok Thailand
4. Division of Dermatology, Department of Internal Medicine, Faculty of Medicine Chiang Mai University Chiang Mai Thailand
5. Division of Dermatology, Department of Medicine, Srinagarind Hospital Medical School Khon Kaen University Khon Kaen Thailand
6. Division of Dermatology Thammasat University Pathum Thani Thailand
7. Novartis Bangkok Thailand
8. Division of Dermatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital Mahidol University Bangkok Thailand