1 Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan, China; Hospital for Skin Diseases, Shandong First Medical University, Jinan, China.
2 Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan, China; Hospital for Skin Diseases, Shandong First Medical University, Jinan, China. Electronic address: wmsd1967@126.com.
3 Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan, China; Hospital for Skin Diseases, Shandong First Medical University, Jinan, China. Electronic address: zhangfuren@hotmail.com.