1. Center for Long‐Term Care Research Kaohsiung Medical University Kaohsiung Taiwan
2. College of Nursing Kaohsiung Medical University Kaohsiung Taiwan
3. Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Taiwan
4. Department of Education and Psychology University of Dubuque Dubuque IA USA
5. Graduate Institute of Natural Products College of Pharmacy Kaohsiung Medical University Kaohsiung Taiwan