1. School of Nursing, National Taipei University of Nursing and Health Sciences, 365, Ming-Te Road, Pei-Tou, Taipei 112, Taiwan
2. Department of Nursing, Hsin Sheng College of Medical Care and Management, Taoyuan, Taiwan
3. Graduate Institute of Acupuncture Science, China Medical University & China Medical University Hospital, Taichung, Taiwan
4. School of Chinese Medicine and Acupuncture Science, China Medical University, 91 Hsueh-Shih Road, Taichung 40402, Taiwan