1. Division of Family Medicine, Department of Family and Community Medicine Tri‐Service General Hospital; and School of Medicine, National Defense Medical Center Taipei Taiwan
2. School of Medicine National Defense Medical Center Taipei Taiwan
3. Division of Geriatric Medicine, Department of Family and Community Medicine Tri‐Service General Hospital Taipei Taiwan
4. Division of Family Medicine, Department of Community Medicine Taoyuan Armed Forces General Hospital Taoyuan Taiwan
5. Department of Biochemistry National Defense Medical Center Taipei Taiwan