[Qiao, Yufei; Zhu, Min; Sun, Wen] Department of Otorhinolaryngology, Peking Union Medical College Hospital, Beijing, People's Republic of China
[Sun, Yang] School of Educational Science, Shenyang Normal University, Shenyang, People's Republic of China
[Cai, Chang; Long, Yuanshun] National Engineering Research Center for E-Learning, Central China Normal University, Wuhan, People's Republic of China
[Guo, Hua] Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, People's Republic of China
[Shen, Hang] Department of Neurology, Peking Union Medical College Hospital, Beijing, People's Republic of China. Electronic address: shenhang12@sina.com
