A Life Table of Pregnancy Terminations and Correlates of Fetal LossSam Shapiro, Paul M. Densen, Ellen W. Jones|The Milbank Memorial Fund Quarterly|1962Cited by 98
Concerning High and Low Utilizers of Service in a Medical Care Plan, and the Persistence of Utilization Levels over a Three Year PeriodPaul M. Densen, Marilyn Einhorn, Sam Shapiro|The Milbank Memorial Fund Quarterly|1959Cited by 70
Further Observations on Prematurity and Perinatal Mortality in a General Population and in the Population of a Prepaid Group Practice Medical Care PlanSam Shapiro, Louis Weiner, Paul M. Densen et al.|American Journal of Public Health and the Nations Health|1960Cited by 59
Comparison of Prematurity and Perinatal Mortality in a General Population and in the Population of a Prepaid Group Practice, Medical Care PlanSam Shapiro, Paul M. Densen, Louis Weiner|American Journal of Public Health and the Nations Health|1958Cited by 58
Prepaid Medical Care and Hospital Utilization in a Dual Choice SituationPaul M. Densen, Sam Shapiro, Ellen W. Jones et al.|American Journal of Public Health and the Nations Health|1960Cited by 49