1 Pediatric Kidney Transplantation Department of Hospital Samaritano de São Paulo, São Paulo, Brazil.
2 Pediatric Oncology Department of Hospital Samaritano de São Paulo, São Paulo, Brazil.
3 Pediatric Oncology Institute, Grupo de Apoio ao Adolescente com Câncer of Federal University of São Paulo, Universidade Federal de São Paulo, São Paulo, Brazil.
4 Ophthalmology Department of Universidade Federal de São Paulo, São Paulo, Brazil.
5 Pediatric Department of Federal University of São Paulo, São Paulo, Brazil.