1. Oral diseases: the neglected epidemic;Allukian,1997
2. Total loss of teeth in adults, United States: 1960–62;Kelly,1973
3. Oral health in America: A report of the surgeon general;U.S. Public Health Service, Office of the Surgeon General, National Institute of Dental and Craniofacial Research,2000
4. The rural rebound;Johnson,1999