Book Review Principles and Practice of Medical Therapy in Pregnancy Second edition. Edited by Norbert Gleicher, with Stanley A. Gall, Baha M. Sibai, Uri Elkayam, Robert M. Galbraith, and Gloria E. Sarto. 1362 pp., illustrated. Norwalk, Conn., Appleton and Lange, 1992. $110. ISBN 0–8385–7979–5 .