1. Department of Periodontics University of Louisville School of Dentistry Louisville Kentucky USA
2. Department of Periodontology, K. M. Shah Dental College and Hospital Sumandeep Vidyapeeth Vadodara Gujarat India
3. Department of Periodontology University of Alabama at Birmingham School of Dentistry Birmingham Alabama USA
4. Department of Periodontics and Oral Medicine University of Michigan School of Dentistry Ann Arbor Michigan USA
5. Department of Periodontics The Dental College of Georgia at Augusta University Augusta Georgia USA