1. Center for Big Data Research in Health and Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
2. Department of Data Science, School of Statistics, Shandong University of Finance and Economics, Jinan, China
3. School of Public Health, Weifang Medical University, Weifang, China
4. Nursing Department, The First Affiliated Hospital of Shandong First Medical University & Qianfoshan Hospital Affiliated Shandong University, Jinan, China