Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 20 references without a DOI — listed, not checked
no DOI — not checkedBanister, J. 1988 Implications of the Aging of China's Population. Center for International Research Staff Paper No. 44, U.S. Bureau of Census, Washington, D.C.
no DOI — not checkedCoale, A.J. 1984 Rapid Population Change in China, 1952?1982. Washington, D.C.: National Academy Press.
no DOI — not checkedFerraro, K.F. 1988 Self-ratings of Health Among the Old and Old-old. Journal of Health and Social Behavior 42: 52.
no DOI — not checkedGu, S., and J. Guo 1989 A Comprehensive Study of the Urban Elderly. Wuhan, China: Wuhan University Press.
no DOI — not checkedGu, S., and B. Wang 1989 International Comparison of the Health and Social Life of the Elderly, Wuhan, China: Wuhan University Press.
no DOI — not checkedInternational Assistance Group on Family Planning 1989 Chartbook of Population Aging in Asia. Tokyo, Japan.
no DOI — not checkedJaing, Z., W. Zhang, and L. Zhu 1984 A Preliminary Examination of Life Expectancy in China. Ren Kou Yu Jing Ji (Population and Economics) 3: 14?17.
no DOI — not checkedJamison, D.T., J.R. Evans, T. King, I. Porter, I. Prescott, and A. Prost 1984 China: The Health Sector. Washington, D.C.: World Bank.
no DOI — not checkedJöreskog, K.G. and D. Sörbom 1988 LISREL 7: A Guide to the Program and Applications Chicago, IL: SPSS Inc.
no DOI — not checkedKantha, S. (1990) Nutrition and Health in China, 1949 to 1989. Progress in Food and Nutrition Science 14: 93?137.
no DOI — not checkedLock, M.M. 1987 Introduction: Health and Medical Care as Cultural and Social Phenomena. In Health, Illness, and Medical Care in Japan. Edward Norebeck and Margaret Lock, eds. pp. 1?23). Honolulu: University of Hawaii Press.
no DOI — not checkedPope, A.M., and A.R. Tarlov 1991 Disability in America: Toward a National Agenda for Prevention. Washington, D.C.: National Academy Press.
no DOI — not checkedPopulation Research Institute, Chinese Academy of Social Sciences 1988 The 1987 Sample Survey of Population 60 Years and Over in China. Population Science of China. Special Issue No. 1.
no DOI — not checkedQu, H. 1984 Status of the Elderly in China. Cairo Demographic Center Research Monography Series, No. 13, Cairo.
no DOI — not checkedState Statistical Bureau of the People's Republic of China 1991 China Statistical Yearbook, 1991. Beijing, China: International Center for the Advancement of Sciences and Technology Ltd. and China Statistical Information and Consultancy Services Center.
no DOI — not checkedU.S. Bureau of Census 1975 1970 Census of Population and Housing. Evaluation and Research Program, Vol. 11: Accuracy of Data for Selected Population Characteristics as Measured by the 1970 CPS-Census Match. PHC(E)-11. Washington, DC: Government Printing Office.
no DOI — not checkedU.S. Senate Special Committee on Aging 1988 Aging America: Trends and Projections. Washington, D.C.: U.S. Department of Health and Human Services.
no DOI — not checkedWorld Health Organization 1958 The First Ten Years of World Health Organization. Geneva: World Health Organization.
no DOI — not checkedXu, S. 1985 Health Statistics of the People's Republic of China. In Good Health at Low Cost. S.B. Halstead, J.A. Walsh and K.S. Warren, eds. Pp. 11?20 N.Y.: Rockefeller Foundation.
no DOI — not checkedYang, H. 1989 The Family Support System for the Elderly in Rural China. Unpublished doctoral dissertation.
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