Dr. Murphy is a practicing chiropractor in Dallas, Texas and has treated hundreds of Frozen Shoulder Syndrome patients successfully using the OTZ Method. He has since aligned himself with Dr. D’Amico and Dr. Hall and the three of them are now training chiropractors throughout the world on this revolutionary treatment. Dr. D’Amico is a chiropractor and a pharmacist. He practices chiropractic near Pittsburgh, Pennsylvania. Dr. Hall is a board-certified chiropractic neurologist who teaches at Parker University in Dallas, Texas, lectures on chiropractic neurology around the world, and maintains a private practice in Dallas, Texas as well.