1. Department of Nursing, Chung Shan Medical University, Taichung, Taiwan
2. Department of Nursing, Chung Shan Medical University Hospital, Taichung, Taiwan
3. Department of Nursing, Asia University, Taichung, Taiwan
4. Lee Women’s Hospital, Taichung, Taiwan
5. Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan