K C Wei1, Y H Wang1,2, W H Wang2, W Chen3,4. 1. Department of Dermatology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan. 2. Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan. 3. IZZ-Immunologie Zentrum Zürich, Zurich, Switzerland. 4. Department of Dermatology and Allergy, Technische Universität München, Munich, Germany.