1. Department of Neurosurgery, Chi Mei Medical Center, Tainan 710402, Taiwan
2. Department of Nursing, Chi Mei Medical Center, Tainan 710402, Taiwan
3. Center for General Education, Southern Taiwan University of Science and Technology, Tainan 710402, Taiwan
4. Department of Medical Research, Chi Mei Medical Center, Tainan 710402, Taiwan
5. School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung 804, Taiwan