Factors associated with deterioration of self-rated chewing ability among adults aged 60 years and older over a 6-year period - Gellacic, Alzira Suelí; Teixeira, Doralice Severo da Cruz; Antunes, José Leopoldo Ferreira; Narvai, Paulo Capel; Lebrão, Maria Lúcia; Frazão, Paulo (Geriatrics & Gerontology International, 2015)