Factors associated with utilisation of dental services by the elders from São Paulo, Brazil - Soares, Gustavo Hermes; Ortiz-Rosa, Ezequiel; Alves, Caroline Paula; Paz, Dayanne; An, Ki Sung; Pereira, Antonio Carlos; Biazevic, Maria Gabriela Haye; Michel-Crosato, Edgard; Frias, Antonio Carlos (Gerodontology, 2021)