# Universal Masking in the Covid-19 Era

> Research article (New England Journal of Medicine, 2020) · cited 25× · AI/ML

**Wikidata**: [openalex:W3030445954](https://www.wikidata.org/wiki/openalex:W3030445954)  
**Source**: https://4ort.xyz/entity/universal-masking-in-the-covid-19-era