1. Sleep complaints among elderly persons;Foley;An epidemiologic study of three communities,1995
2. Normal Aging
3. Age-related sleep change;Vitiello;Gender and estrogen effects on the subjective-objective sleep quality relationships of healthy, noncomplaining older men and women,2004
4. Quantification of subjective sleep quality in healthy elderly men and women using the Pittsburgh Sleep Quality Index (PSQI);Buysse;Sleep,1991