1 Postgraduation program in Medical Sciences, Medical School, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil. Electronic address: maribres@gmail.com.
2 Nephrology, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
3 Nephrology, Department of Medicine, Medical School, Universidade Federal de São Paulo, São Paulo, Brazil.
4 Nephrology Division, Department of Medicine, Medical School, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.