4 ms·
https://www.acpjournals.org/doi/10.7326/M20-6817 https://www.acpjournals.org/doi/10.7326/M20-6817
by matz1 6y ago
https://www.acpjournals.org/doi/10.7326/M20-6817 https://www.acpjournals.org/doi/10.7326/M20-6817
- Shared404 6y ago> no assessment of whether masks could decrease disease transmission from mask wearers to others. Still need a source. I wasn't asking for a source on if they protect the wearer, I was asking for a source for "whether mask actually help with the pandemic"