Laminar flow ventilation system to prevent airborne infection during exercise in the COVID-19 crisis: A single-center observational study

PLoS One. 2021 Nov 10;16(11):e0257549.

Katsumata Y, Sano M, Okawara H, Sawada T, Nakashima D, Ichihara G, Fukuda K, Sato K, Kobayashi E