1. Department of Imaging, Xingtai People's Hospital, Xingtai, Hebei 054001, P.R. China
2. Department of Imaging, Xingtai Orthopedic Hospital, Xingtai, Hebei 054001, P.R. China
3. Department of Cardiothoracic Surgery, Xingtai People's Hospital, Xingtai, Hebei 054001, P.R. China
4. Department of Neurology, Xingtai People's Hospital, Xingtai, Hebei 054001, P.R. China