1. Department of Nursing, Pingtung Christian Hospital, Pingtung Country, Taiwan, and School of Nursing, Kaohsiung Medical University, Kaohsiung City, Taiwan
2. School of Nursing, Kaohsiung Medical University, Kaohsiung City, Taiwan
3. Department of Nursing, Chi Mei Hospital Liou Ying, Tainan Country, Taiwan, and School of Nursing, Kaohsiung Medical University, Kaohsiung City, Taiwan