Dr. William O'Neill answers the question: 'What Is A Defibrillator?' — -- Question: What is a defibrillator and how does it work? Answer :A defibrillator is an electrical device that provides a ...
Jon LaPook, M.D. is the award-winning chief medical correspondent for CBS News. Since joining CBS News in 2006, LaPook has delivered more than 1,200 reports on a wide variety of breaking news and ...