1. Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
2. Center for Quantitative Biology, Peking University, Beijing 100871, P. R. China
3. LMAM, School of Mathematical Sciences, Peking University, Beijing 100871, P. R. China
4. Center for Statistical Sciences, Peking University, Beijing 100871, P. R. China
5. Department of Statistics and Data Science, National University of Singapore, Singapore 117546, Singapore
6. Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China