1. School of Nursing; College of Medicine; Chung Shan Medical University; Taichung Taiwan
2. Department of Nursing; Chung Shan Medical University Hospital; Taichung Taiwan
3. Jianan Psychiatric Centre, Ministry of Health and Welfare; Tainan Taiwan
4. School of Nursing; College of Medicine; Chang Gung University; Tao-Yuan Taiwan
5. Department of Nursing; Chang Gung Memorial Hospital; Keelung City Taiwan