1. ARCES—Advanced Research Center on Electronic Systems for Information and Communication Technologies “Ercole De Castro”, University of Bologna, 40136 Bologna, Italy
2. STMicroelectronics, ARCES, 40136 Bologna, Italy
3. Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi”, University of Bologna, 40136 Bologna, Italy
4. Institute of Cardiology, Department of Medical and Surgical Sciences, University of Bologna, Policlinico S.Orsola-Malpighi, via Massarenti 9, 40138 Bologna, Italy
5. UOC di Cardiologia, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Dipartimento Cardio-Toraco-Vascolare, via Massarenti 9, 40138 Bologna, Italy