Fig. 1

Political and administrative division of Brazil into five regions. North (AC: Acre, AM: Amazonas, AP: Amapá, RO: Rondônia, and RR: Roraima); Northeast (AL: Alagoas, BA: Bahia, CE: Ceará, MA: Maranhão, PB: Paraíba, PE: Pernambuco, PI: Piauí, RN: Rio Grande do Norte, and SE: Sergipe); Central West (DF: Distrito Federal, GO: Goiás, MS: Mato Grosso do Sul, and MT: Mato Grosso); Southeast (ES: Espírito Santo, MG: Minas Gerais, RJ: Rio de Janeiro, and SP: São Paulo); and South (PR: Paraná, RS: Rio Grande do Sul, and SC: Santa Catarina)