Search Results Use the search box below to revise your search, or start a new search. Studies (1) Variables Publications Your query returned 1 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. World Health Organization Collaborative Study on Social and Health Aspects of Aging in Bahrain, Egypt, Jordan, and Tunisia, 1991 (ICPSR 6250) Andrews, Gary R.