Boing, A. C., Bertoldi, A. D., Posenato, L. G. and Peres, K. G. (2014) “ The influence of health expenditures on household impoverishment in Brazil ”, Revista de Saúde Pública, 48(5), pp. 797-807. doi: 10.1590/S0034-8910.2014048005113.