- First aid, CPR, and AED, Alton L. Thygerson, EdD, FAWM, medical writer, Steven M. Thygerson, PhD, MSPH, medical writer, Benjamin Gulli, MD, FAAOS, medical editor, Howard L. Mell, MD, MPH, FACEP, medical editor, Bob Elling, MPA, EMT-P, series editor ; American College of Emergency Physicians