Qiuyun Xu, MD a, Zugen Huang, MD b, Shuyi Shen, MD a, Manlin Yan, MD c, Ting Gong, PhD d, Chao Ji, PhD a, ⁎ 
a Department of Dermatology, Institute of Dermatology and Venereology, Fujian Dermatology and Venereology Research Institute, Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, the First Affiliated Hospital of Fujian Medical University, Fuzhou, People’s Republic of China
b Department of Plastic & Cosmetic Surgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou, People’s Republic of China
c Fuzhou Kangtai Physical Examination Center, Fuzhou, People’s Republic of China
d Central Laboratory, the First Affiliated Hospital of Fujian Medical University, Fuzhou, People’s Republic of China