1. Department of Nursing, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan
2. Tainan Municipal Hospital (Managed by Show Chwan Medical Care Corporation), No. 670, Chongde Road, East District, Tainan City 701, Taiwan
3. Department of Information Technology and Communication, Shih Chien University Kaohsiung, No. 200, Daxue Road, Neimen District, Kaohsiung City 84550, Taiwan