RT Journal Article SR Electronic T1 Ingenuity during the COVID-19 pandemic: a controlled experiment for respirator mask efficacy testing JF BMJ Innovations JO BMJ Innov FD All India Institute of Medical Sciences SP bmjinnov-2020-000514 DO 10.1136/bmjinnov-2020-000514 A1 Michael Hausman A1 Danil Rybalko A1 Philip Nasser A1 Damien Laudier A1 Daniel Charen A1 Emily Ferreri A1 James Iatridis A1 Leesa Galatz YR 2020 UL http://innovations.bmj.com/content/early/2020/12/16/bmjinnov-2020-000514.abstract AB