1 Department of Nursing, Chung Shan Medical University Hospital, Taiwan; Department of Public Health, Chung Shan Medical University, Taiwan; Department of Nursing, Chung Shan Medical University, Taiwan.
2 Department of Nursing, Chung Shan Medical University Hospital, Taiwan; Department of Nursing, Chung Shan Medical University, Taiwan; School of Nursing, Institute of Medicine, Chung Shan Medical University, Taiwan. Electronic address: shl@csmu.edu.tw.
3 Department of Public Health, Chung Shan Medical University, Taiwan.