1. Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY.
2. Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
3. Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY.
4. Department of Oral Surgery and Implant Dentistry, Dental School, Johann Wolfgang Goethe, University of Frankfurt, Frankfurt, Germany.
5. Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY.