Li, Y., Qian, H., et al. 2020. “Evidence for probable aerosol transmission of SARS-CoV-2 in a poorly ventilated restaurant.” medRxiv 2020.04.16.20067728. “Airborne route and bad use of ventilation systems as non-negligible factors in SARS-CoV-2 transmission” G. Correia, L. Rodrigues et al. 2020. Medical Hypotheses Volume 141, August 2020, 109781