1 | Department of Nephrology, Presidente Dutra Universitary Hospital, University of Maranhão (UFMA), São Luís, MA, Brazil |
2 | Department of Nephrology, Onofre Lopes Universitary Hospital, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil |
3 | Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (FMRPUSP), Ribeirão Preto, SP, Brazil |