1. Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
2. Department of Dermatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
3. Department of Dermatology, The Second People's Hospital of Guiyang, Guiyang, Guizhou 550023, P.R. China
4. Department of Neurosurgery, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China