[1
]
Department of Biostatistics, School of Public Health, Cheeloo College of Medicine,
Shandong University, Jinan 250012, PR China.
[2
]
Department of Biostatistics, School of Public Health, Cheeloo College of Medicine,
Shandong University, Jinan 250012, PR China; Institute for Medical Dataology, Shandong
University, Jinan 250002, PR China.
[3
]
Department of Biostatistics, School of Public Health, Cheeloo College of Medicine,
Shandong University, Jinan 250012, PR China; Institute for Medical Dataology, Shandong
University, Jinan 250002, PR China. Electronic address: liu-yx@sdu.edu.cn.
[4
]
Department of Biostatistics, School of Public Health, Cheeloo College of Medicine,
Shandong University, Jinan 250012, PR China; Institute for Medical Dataology, Shandong
University, Jinan 250002, PR China. Electronic address: xuefzh@sdu.edu.cn.