1. PhD Student, Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa
2. Professor and Chair, Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa
3. Professor, Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa
4. Assistant Professor, Department of Restorative Dentistry, School of Dentistry, University of Detroit Mercy