![The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00264-022-05371-8/MediaObjects/264_2022_5371_Fig2_HTML.png)
The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink
![The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00264-022-05371-8/MediaObjects/264_2022_5371_Fig1_HTML.png)
The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink
![The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink The use of a surgical helmet system with a high-efficiency particulate air filter as possible protection equipment during the coronavirus disease 2019 pandemic: a double-blinded randomized control study | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00264-022-05371-8/MediaObjects/264_2022_5371_Fig4_HTML.png)