1. Models, definitions, and criteria of frailty;Hogan;Aging Clin Exp Res,2003
2. Designing randomized, controlled trials aimed at preventing or delaying functional decline and disability in frail, older persons;Ferrucci;A consensus report,2004
3. Frailty in older adults;Fried;Evidence for a phenotype,2001
4. Untangling the concepts of disability, frailty, and comorbidity;Fried;Implications for improved targeting and care,2004
5. The development of insidious disability in activities of daily living among community-living older persons;Gill;Am J Med,2004