1. Biophysics Group, Department of Physics and Astronomy, University College London, Gower Street, London, UK
2. UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London, UK
3. UCL Electronic and Electrical Engineering, UCL, Gower Street, London, UK
4. Healthy Infrastructure Research Group, Department of Civil, Environmental & Geomatic Engineering, UCL, Gower Street, London, 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