Prenatal care, prematurity, and neonatal mortality

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[2]  B. Greenberg,et al.  North Carolina fetal and neonatal death study. I. Study design and some preliminary results. , 1958, American journal of public health and the nation's health.

[3]  L. Baumgartner,et al.  Challenge of fetal loss, prematurity and infant mortality; assessing the local situation. , 1958, Journal of the American Medical Association.