1. Department of Nursing; Cheng Hsin General Hospital; Taipei Taiwan
2. Department of Nursing; Song Shang Armed Forces General Hospital; Taipei Taiwan
3. Institute of Aerospace Medicine; School of Medicine; National Defense Medical Center; Taipei Taiwan
4. Department of Nursing; Taipei Medical University Hospital; Taipei Medical University; Taiwan
5. College of Oral Medicine; Taipei Medical University; Taiwan
6. Graduate Institute of Nursing; College of Nursing; Taipei Medical University; Taiwan