S. M. Spedo, N. R. da S. Pinto, and O. Y. Tanaka, “ The intramunicipal regionalization of the Brazilian National Health System (SUS): a case study in the city of São Paulo (SP), Brazil ”, Saúde Soc., vol. 19, no. 3, pp. 533–546, Sep. 2010, doi: 10.1590/S0104-12902010000300006.