[1
]
Department of Orthodontics, School of Stomatology, China Medical University, Shenyang,
Liaoning Province 110001, PR China. Electronic address: liufan-sky@163.com.
[2
]
Department of Biostatistics and Epidemiology, School of Public Health, China Medical
University, Shenyang, Liaoning Province 110001, PR China. Electronic address: zhaoyang_cmu@126.com.
[3
]
Department of Biostatistics and Epidemiology, School of Public Health, China Medical
University, Shenyang, Liaoning Province 110001, PR China. Electronic address: xinxin_lyq@163.com.
[4
]
Department of Biostatistics and Epidemiology, School of Public Health, China Medical
University, Shenyang, Liaoning Province 110001, PR China. Electronic address: liuyang071506@126.com.
[5
]
Department of Biostatistics and Epidemiology, School of Public Health, China Medical
University, Shenyang, Liaoning Province 110001, PR China. Electronic address: sunjingjl_2007@126.com.
[6
]
Department of Biostatistics and Epidemiology, School of Public Health, China Medical
University, Shenyang, Liaoning Province 110001, PR China. Electronic address: gghuangmeimeng@163.com.
[7
]
Department of Orthodontics, School of Stomatology, China Medical University, Shenyang,
Liaoning Province 110001, PR China. Electronic address: liuyi256@126.com.
[8
]
Department of Preventive Medicine, School of Public Health, Sun Yat-sen University,
Guangzhou, Guangdong Province 510080, PR China. Electronic address: donggh5@mail.sysu.edu.cn.