1. Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133 Milano, Italy
2. Clinical Engineering Department of ASST Grande Ospedale Metropolitano Niguarda, 20162 Milano, Italy
3. Istituto Auxologico Italiano, IRCCS, S. Giuseppe Hospital, Strada Luigi Cadorna 90, 28824 Piancavallo, Italy