Kilsztajn, Samuel, Dorivaldo Francisco da Silva, Marcelo Bozzini da Camara, and Vanessa Setsuko Ferreira. 2001. “ Level of Private Health Insurance Coverage and Regional Distribution of Public Health Expenditure ”. Saúde E Sociedade 10 (2): 35-46. https://doi.org/10.1590/S0104-12902001000200004.