1. Children's Medical Center, Taichung Veterans General Hospital, Xitun, Taichung 40705, Taiwan, R.O.C.
2. Department of Medicine, Mackay Medical College, Sanzhi, New Taipei 252, Taiwan, R.O.C.
3. Department of Dermatology, Taichung Veterans General Hospital, Xitun, Taichung 40705, Taiwan, R.O.C.
4. Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Zuoying, Kaohsiung 813, Taiwan, R.O.C.