1. Water fluoridation: the search for victory;McClure,1970
2. Estimated prevalence and distribution of reported orofacial pain in the United States;Lipton;JADA,1993
3. International Association for the Study of Pain. Classification of chronic pain;Merskey;Pain,1986
4. Musculoskeletal measures of orofacial pain;Fricton;Anesth Prog,1990
5. Epidemiology: principles and methods;MacMahon,1970