1. Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
2. Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.
3. Yonsei Cancer Research Institute, Cancer Metastasis Research Center, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.