1. Department of Biomedical Sciences, University of Cagliari, Italy
2. Department of Electrical and Electronic Engineering, University of Cagliari, Italy
3. Amity University, Sector-125, Noida, India
4. Present Address: National Institute of Biologicals, A-32, Institutional Area, Block-A, Industrial Area, Sector-62, Noida-201309, Uttar Pradesh, India