1. Emergency Department; Chi-Mei Medical Center; Tainan Taiwan
2. School of Nursing; Kaohsiung Medical University; Kaohsiung Taiwan
3. Biostatistics, School of Pharmacy; Kaohsiung Medical University; Kaohsiung Taiwan
4. Division of Statistical Analysis, Department of Medical Research; Kaohsiung Medical University Hospital; Kaohsiung Taiwan
5. College of Health Science; Kaohsiung Medical University; Kaohsiung Taiwan
6. Department of Nursing, College of Medicine; National Cheng Kung University; Tainan Taiwan