The Authors Peter G. Dorland received a bachelor's degree in biology from Amherst College. From April 1971 to April 1972 he served in Vietnam as an Army lieutenant flying helicopter ambulance missions for "Eagle Dust Off" of the 101st Airborne Division (Airmobile). From 1974 to 1977 he worked on this manuscript at Fort Detrick, Maryland, for the Army Medical Department. He then returned to flying duties, and is currently commanding, as a major, the 247th Medical Detachment at Fort Irwin, California. James S. Nanney received his B.A., M.A., and Ph.D. degrees from Vanderbilt University.