1. Department of Neurosurgery, Chang Gung Memorial Hospital, 6, West Sec., Chia-Pu Road, Chia-Yi, Taiwan 61363, ROC
2. College of Medicine, Chang Gung University, 259, Wenhua First Road, Tao-Yuan, Taiwan 33302, ROC
3. Department of Chemical Engineering, National Chung Cheng University, 168, University Road, Chia-Yi, Taiwan 62102, ROC
4. Department of Accounting, Providence University, 200, Taiwan Boulevard, Taichung, Taiwan 43301, ROC
5. Department of Chemical Engineering, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, ROC