1. School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12516-410, SP, Brazil
2. Department of Electrical and Computer Engineering, University of São Paulo (USP), São Carlos 13566-590, SP, Brazil
3. Department of Biosystems Engineering, University of São Paulo (USP), Piracicaba 13418-900, SP, Brazil
4. Medical School, University of São Paulo (USP), Ribeirão Preto 14049-900, SP, Brazil
5. Espectro Ltd., Campinas 13084-012, SP, Brazil