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Your query returned 5 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results.

Danish 1905 Cohort Study, 1998 (ICPSR 3960)
Christensen, Kaare; Duke University
Longitudinal Study of Aging Danish Twins, 1995 (ICPSR 21041)
Christensen, Kaare; Vaupel, James W.
National Health Interview Survey, 2004 (ICPSR 4349)
United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics

more results 5 more results in National Health Interview Survey Series

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