When it comes to medical advice, Dr. Nortin M. Hadler is an authority--his books Stabbed in the Back: Confronting Back Pain in an Overtreated Society and Worried Sick: A Prescription for Health in an Overtreated America are go-to guides for those interested in the way medical care works, as well as how it needs to change. Recently, Hadler's name and a wide variety of his writings have appeared around the Internet, with topics ranging from worker's comp to his philosophy on advance screening and comparative research. Here's a sampling of what the medical community is...