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2. 2. G. Spencer US Bureau of the Census. Projections of the population of the United States, by age, sex, and race: 1988 to 2080. Current population report series P-25, No. 1018. 1989 .
3. The Risk of Nursing Home Use in Later Life
4. Oral health in nursing homes
5. Oral health in a long-term care institution equipped with a dental service