Effectiveness of a UVC air disinfection system for the HVAC of an ICUSusana Oliveira de Souza, Antônio Américo Cardoso Jr, Aquiles Sales Craveiro Sarmento and Francesco d’ErricoEur. Phys. J. Plus, 137 1 (2022) 37DOI: https://doi.org/10.1140/epjp/s13360-021-02240-y