1. Department of Electrical Engineering and Information Technology (DIETI) and the Centro Interdipartimentale di Ricerca in Management Sanitario e Innovazione in Sanità (CIRMIS), Università degli Studi di Napoli Federico II, Naples, Italy
2. Department of Electrical Engineering and Information Technology (DIETI), Università degli Studi di Napoli Federico II, Naples, Italy
3. Department of Electronics and Telecommunications (DET), Politecnico di Torino, Turin, Italy