1. Private Practice, Cambridge, Owatonna, and Faribault, Minn
2. Associate Professor and Director, Division of Orthodontics, School of Dentistry, University of Minnesota, Minneapolis, Minn
3. Research Assistant, Biostatistical Design and Analysis Center, Clinical and Translational Science Institute, University of Minnesota, Minneapolis, Minn
4. Research Associate, Biostatistical Design and Analysis Center, Clinical and Translational Science Institute, University of Minnesota, Minneapolis, Minn