1. Some mathematical models of frailty and their clinical implications;Rockwood;Rev Clin Gerontol,2002
2. Frailty
3. Hogan DB MacKnight C Bergman H et al Models, definitions, and criteria of frailty 2003 15 (3 Suppl) 1 29
4. How to select a frail elderly population? A comparison of three working definitions;Chin;J Clin Epidemiol,2000
5. There's something about frailty;Morley;J Gerontol A Biol Sci Med Sci,2002