1. Quantitative relationships between perceived and objective need for health care: dentistry as a model;Giddon;Public Health Rep,1976
2. Clinical oral health status and adult perceptions of oral health;Reisine;Soc Sci Med,1980
3. How dental conditions handicap the elderly;Smith;Community Dent Oral Epidemiol,1979
4. Perceived need for dental care in dentate older adults;Gilbert;Int Dent J,1994