||Mayo Clinic took root in farm fields near Rochester, Minn., in the late 1800s. It grew from the medical practice of a country doctor, William Worrall Mayo, and the partnership of his two sons, William J. and Charles H. Mayo — affectionately known as Dr. Will and Dr. Charlie.The brothers’ innovative ideas and tireless work in learning and creating new surgical techniques attracted international attention. Today, Mayo Clinic — one of the world’s oldest and largest multispecialty group practices — comprises more than 45,000 physicians, scientists, nurses and other staff at its Rochester, Minn.; Jacksonville, Fla.; and Arizona locations; and its regional community-based health care practices. At Mayo Clinic, patient care, medical education and medical research work together for the good of the patient. With this depth of medical knowledge, experience and expertise, Mayo Clinic occupies an unparalleled position as an award-winning health information resource.