A. I. C. de Medeiros, R. B. de Mesquita, F. de S. Macêdo, A. G. de C. Matos, and E. D. Pereira, “Prevalence of burnout among healthcare workers in six public referral hospitals in northeastern Brazil during the COVID-19 pandemic: a cross-sectional study”, Sao Paulo Med J, vol. 140, no. 4, pp. 553–558, Jul. 2022.