1. Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China.
2. Department of Impression Evidence Examination Technology, Criminal Investigation Police University of China, Shenyang, China.
3. Department of Mathematics, School of Fundamental Sciences, China Medical University, Shenyang, China.
4. Department of Ophthalmology, The First Affiliated Hospital of China Medical University, Shenyang, China.