Further Observations on Prematurity and Perinatal Mortality in a General Population and in the Population of a Prepaid Group Practice Medical Care Plan

Further Observations on Prematurity and Perinatal Mortality in a General Population and in the Population of a Prepaid Group Practice Medical Care Plan Sam Shapiro, Harold Jacobziner, Paul M. Densen, and Louis Weiner CopyRight https://doi.org/10.2105/AJPH.50.9.1304 Published Online: August 29, 2011