1. Center for Geriatrics and GerontologyTaipei Veterans General Hospital Taipei Taiwan
2. Aging and Health Research CenterNational Yang Ming University Taipei Taiwan
3. Department of Geriatric MedicineNational Yang Ming University School of Medicine Taipei Taiwan
4. Department of Family MedicineTaipei Veterans General Hospital Yuanshan Branch Yilan Taiwan
5. Full Universe Integrated Marketing Taipei Taiwan
6. Department of Health Management and PolicyUniversity of Michigan Ann Arbor Michigan USA
7. Hualien Tzu Chi HospitalBuddhist Tzu Chi Medical Foundation Hualien Taiwan
8. Institute of Public HealthNational Yang Ming University Taipei Taiwan
9. Cheng‐Hsin General Hospital Taipei Taiwan