Military gas mask to protect surgeons when performing tracheotomies on patients with COVID-19
Jean-Baptiste Caruhel, N Sigaux, A Crambert, N Donat, G Boddaert, P Haen, C Hoffmann
BMJ Mil Health Jun 2021, 167 (3) 214; DOI: 10.1136/bmjmilitary-2020-001547