Protection levels of N95-level respirator substitutes proposed during the COVID-19 pandemic: safety concerns and quantitative evaluation procedures
David H Ballard, Audrey J Dang, Benjamin M Kumfer, Patricia B Weisensee, J Mark Meacham, Alex R Scott, Mary Ruppert-Stroescu, Broc A Burke, Jason Morris, Connie Gan, Jesse Hu, Bradley King, Udayabhanu Jammalamadaka, Sena Sayood, Stephen Liang, Shruti Choudhary, David Dhanraj, Bruno Maranhao, Christine Millar, J Tyler Bertroche, Nirah Shomer, Pamela K Woodard, Pratim Biswas, Richard Axelbaum, Guy Genin, Brent J Williams, Kathleen Meacham
BMJ Open Sep 2021, 11 (9) e045557; DOI: 10.1136/bmjopen-2020-045557
