1. Visiting Assistant Professor, Minnesota Dental Research Center for Biomaterials and Biomechanics, School of Dentistry; and Lecturer in Dental Materials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt. From the University of Minnesota, Minneapolis, MN.
2. Professor, Minnesota Dental Research Center for Biomaterials and Biomechanics, School of Dentistry. From the University of Minnesota, Minneapolis, MN.
3. Senior Research Associate, Division of Biostatistics and School of Dentistry. From the University of Minnesota, Minneapolis, MN.