1. 1Department of Neurosurgery, Department of Surgery, National Taiwan University Hospital, and National Taiwan University College of Medicine;
2. 2Department of Surgery, National Taiwan University Hospital, Yun-Lin Branch, Yun-Lin; and
3. 3Department of Neurosurgery, Chang-Hau Christian Hospital, Chang-Hau, Taiwan
4. 4Center for Optoelectronic Biomedicine, National Taiwan University College of Medicine, Taipei;