1. Pisa Division, National Institute for Nuclear Physics (INFN), 56127 Pisa, Italy
2. Department of Physical Sciences, Earth and Environment (DSFTA), University of Siena, 53100 Siena, Italy
3. Imago7 Foundation, 56128 Pisa, Italy
4. Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy
5. Hyperfine Research Inc., Guilford, CT 06437, USA
6. GE Healthcare Inc., Aurora, OH 44202, USA
7. Department of Life, Health & Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy
8. Gran Sasso National Laboratory, INFN, 67100 L’Aquila, Italy
9. SPIN-CNR, c/o Department of Physical and Chemical Science, University of L’Aquila, 67100 L’Aquila, Italy
10. School of Engineering, London South Bank University, London SE1 0AA, UK
11. Umbria Bioengineering Technologies (UBT) Srl, 06081 Perugia, Italy
12. IRCCS Stella Maris Foundation, 56128 Pisa, Italy