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Thomas M. and Doris Graber Endowed Professor of Dentistry, Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Mich; professor of Cell and Developmental Biology, School of Medicine, University of Michigan, Ann Arbor, Mich; research scientist, Center for Human Growth and Development, University of Michigan, Ann Arbor, Mich; private practice, Ann Arbor, Mich
Assistant professor, Department of Orthodontics, University of Florence, Florence, Italy; Thomas M. Graber Visiting Scholar, Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, Mich