1. Department of Dermatology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong 518107, P. R. China
2. School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei, Anhui 230032, P. R. China
3. Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230036, P. R. China
4. Guangdong Provincial Key Laboratory of Digestive Cancer Research and The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong 518107, P. R. China