1. Department of Nursing; National Taiwan University Hospital; Taipei Taiwan
2. Department of Nursing; College of Medicine; National Taiwan University; Taipei Taiwan
3. Department of Surgery; National Taiwan University Hospital; Taipei Taiwan
4. Department of Surgery; College of Medicine; National Taiwan University; Taipei Taiwan
5. Angiogenesis Research Center; College of Medicine; National Taiwan University; Taipei Taiwan
6. Department of Anatomy and Cell Biology; College of Medicine; National Taiwan University; Taipei Taiwan
7. Institute of Statistics; National Chiao Tung University; Hsinchu Taiwan
8. Division of Geriatric Medicine and Meyers Primary Care Institute; University of Massachusetts Medical School; Worcester Massachusetts
9. Department of Medicine; Beth Israel Deaconess Medical Center; Harvard Medical School; Boston Massachusetts
10. Institute for Aging Research; Hebrew Senior Life; Boston Massachusetts