1. Prenatal Care United States 1969-1975;National Center for Health Statistics,1978
2. Infant Death: An Analysis by Maternal Risk and Health Care;Kessner,1973
3. High-risk obstetrics. II. Value of semiobjective grading system in identifying the vulnerable group;Nesbitt;Am. J. Obstet. Gynecol,1969
4. High-risk obstetrics. VI. An evaluation of the effects of intensified care on pregnancy outcome;Nesbitt;Am. J. Obstet. Gynecol.,1971
5. Antepartum identification of the fetus at risk;Goodwin;Canad. Med. Assoc. J.,1969