1. Dentistry, University of Iowa College of Dentistry & Dental Clinics; Iowa City Iowa USA
2. Associate Professor, Program Director, Student Research Program, Loma Linda University School of Dentistry Center for Dental Research; 11175 Campus Street CSP A1010C Loma Linda, California 92350 USA
3. Associate Research Scientist/Adjunct Assistant Professor, Division of Biostatistics and Research Design and Department of Preventive and Community Dentistry; University of Iowa College of Dentistry & Dental Clinics; Iowa City Iowa USA
4. Professor, Oral Pathology, Radiology and Medicine; Dows Institute for Dental Research, University of Iowa College of Dentistry & Dental Clinics; Iowa City Iowa USA