1. Cardiovascular Division, Department of Physiology, Federal University of São Paulo, São Paulo, SP, Brazil
2. Nephrology Division, Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
3. Cardiovascular Division, Department of Physiology, Federal University of São Paulo, Sao Paulo School of Medicine, Rua Botucatu, 862, 04023-060 Sao Paulo, SP, Brazil