Original Article: PDF OnlyPhosphorus-Free Calcium Supplements in PregnancyHOFFMAN, JEROME J. M.D.; BLINICK, GEORGE M.D. Author Information From the Beth Israel Hospital, New York, N. Y. Obstetrics & Gynecology 12(6):p 694-698, December 1958. Buy © 1958 The American College of Obstetricians and Gynecologists