1. Biophysics Group, Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
2. UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London, W1S 4BS, UK
3. UCL Electronic and Electrical Engineering, UCL, Gower Street, London, WC1E 7JE, UK
4. Healthy Infrastructure Research Group, Department of Civil, Environmental & Geomatic Engineering, UCL, Gower Street, London, WC1E 6BT, UK
5. Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
6. Environmental Research Laboratory, ClinicalMicrobiology and Virology, University College London Hospitals NHS Foundation Trust, London, UK
7. Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada