1 Department of Neurosurgery, Taichung Veterans General Hospital, Taichung 40705, Taiwan; Department of Physical Therapy, Hung Kuang University, Taichung 43302, Taiwan; Department of Medicine, National Defense Medical Center, Taipei 114, Taiwan; Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan.
2 Department of Neurosurgery, Taichung Veterans General Hospital, Taichung 40705, Taiwan.
3 Graduate Institute of Pharmaceutical Science and Technology, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan.
4 Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan.