Boing, Alexandra Crispim, Andréa Dâmaso Bertoldi, Aluísio Jardim Dornellas de Barros, Leila Garcia Posenato, and Karen Glazer Peres. 2014. “ Socioeconomic Inequality in Catastrophic Health Expenditure in Brazil ”. Revista De Saúde Pública 48 (4): 632-41. https://doi.org/10.1590/S0034-8910.2014048005111.