<li>Laura Fierce, Alison J. Robey, Cathrine Hamilton. <strong>High efficacy of layered controls for reducing exposure to airborne pathogens</strong>. <em>Indoor Air</em>, 2022; 32 (2) DOI: <a href="http://dx.doi.org/10.1111/ina.12989" rel="nofollow" target="_blank">10.1111/ina.12989</a>
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