1. Department of Dermatology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
2. Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
3. Department of Dermatology, The Sixth Affiliated Hospital of Kun Ming Medical University, Yuxi, Yunnan 653100, P.R. China
4. Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China