LETTERS: PDF OnlyLETTERS Author Information The woodcut above is “Two Doctors in Discussion,” from Treatise Against All Pestilence and Tainted Air by Alonso Espina (Valladolid, Spain, 1518). (The Bettmann Archive) Obstetrics & Gynecology 16(6):p 745-746, December 1960. Buy © 1960 The American College of Obstetricians and Gynecologists