Renal Lesions in Pregnancy: PDF OnlyUrinary Estriol as an Index of Placental Function A Preliminary ReportGREENE, JOHN W. JR. M.D.; TOUCHSTONE, JOSEPH C. Ph.D.; FIELDS, HARRY M.D. Author Information From the Department of Obstetrics and Gynecology, School of Medicine, University of Pennsylvania, Philadelphia, Pa. Obstetrics & Gynecology 17(3):p 349-354, March 1961. Buy © 1961 The American College of Obstetricians and Gynecologists