1. Department of Diagnostic and Biomedical Sciences The University of Texas Health Sciences Center at Houston School of Dentistry Houston Texas USA
2. Arthur A. Dugoni School of Dentistry University of the Pacific San Francisco California USA
3. Department of Periodontics and Oral Medicine School of Dentistry and Department of Psychology College of Literature Science & Arts (LS&A) University of Michigan Ann Arbor Michigan USA
4. Office of Policy and Education Research, American Dental Education Association Washington District of Columbia USA