Halbert L. Dunn, M.D. (1896-1975) was the leading figure in establishing a national vital statistics system in the United States and is known as the "father of the wellness movement". Born in New Paris, Ohio, he attended the University of Minnesota where he earned his M.D. in 1922 and his Ph.D. in 1923. He served as an assistant in medicine at Presbyterian Hospital of New York City 1923-1924 and as fellow in medicine at the Mayo Clinic in Rochester, Minnesota (1924-1925). Wikipedia
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