1. Old people at home: their unreported needs;Williamson;Lancet,1964
2. Physicians' knowledge of and response to patients' problems;Stewart;Med Care,1977
3. Failure of physicians to recognize functional disability in ambulatory patients;Calkins;Ann Intern Med,1991
4. Functional status index: reliability of a chronic disease evaluation instrument;Jette;Arch Phys Med Rehabil,1980
5. Functional screening of elderly people living at home;Russell;Practitioner,1988