L. P. Kowalski, M. M. de Oliveira, R. V. M. Lopez, D. R. M. e Silva, M. K. Ikeda, and M. P. Curado, “Survival trends of patients with oral and oropharyngeal cancer treated at a cancer center in Sa˜o Paulo, Brazil”, Clinics, vol. 75, p. e1507, Apr. 2020, doi: 10.6061/clinics/2020/e1507.