[1
]
Department of Orthodontics, State Key Laboratory of Oral Diseases, West China School
and Hospital of Stomatology, Sichuan University, Chengdu, China.
[2
]
Department of Orthodontics, School and Hospital of Stomatology, Peking University,
Beijing, China.
[3
]
Department of Orthodontics, Guanghua School and Hospital of Stomatology, Sun yat-sen
University, Guangzhou, China.
[4
]
Department of Oral and Maxillofacial Surgery, State Key Laboratory of Oral Diseases,
West China School and Hospital of Stomatology, Sichuan University, Chengdu, China.
[5
]
Department of Orthodontics, State Key Laboratory of Oral Diseases, West China School
and Hospital of Stomatology, Sichuan University, Chengdu, China. Electronic address:
yuli@scu.edu.cn.