1. Periodontal Findings in Cohen Syndrome With Chronic Neutropenia
2. Periodontal diseases in North America
3. Global epidemiology of periodontal diseases in children and young persons
4. 5. American Academy of Periodontology, M Nevins, W Becker, and K Kornman . Consensus report. Discussion section I . In: editors.Proceedings of the World Workshop in Clinical Periodontics. Chicago: American Academy of Periodontology, 1989 : I-23-I-32 .