Liu Yang1,2, Zexing Song1,3, Yue Qian1,2, Juan Tao1,2. 1. Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. 2. Hubei Engineering Research Center for Skin Repair and Theranostics, Wuhan, China. 3. The Second Clinical Medical College, Chongqing Medical University, Chongqing, China.