1. Department of Periodontology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, Massachusetts 02115-5888, Division of Cellular and Molecular Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
2. School of Dental Medicine, Southern Illinois University, Alton, Illinois
3. Department of Periodontology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, Massachusetts 02115-5888, currently, SUNY-Stony Brook School of Dental Medicine, Stony Brook, New York