1. Siguang Chen and Yifeng Miao with the School of Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing, China
2. Department of Dermatology, Women’s Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
3. School of Computer and Information, Anhui Normal University, Wuhu, China