3 ms·
I missed the use of word "promotion". It would be interesting to see the difference in just use of the masks.
by starik36 5y ago
I missed the use of word "promotion". It would be interesting to see the difference in just use of the masks.
- aw1621107 5y ago> It would be interesting to see the difference in just use of the masks. Indeed it would, but I think getting a large-scale trial with a sufficiently high compliance rate would be a challenge, to say the least.