# A method for the identification of COVID-19 biomarkers in human breath using Proton Transfer Reaction Time-of-Flight Mass Spectrometry

> Research article (EClinicalMedicine, 2021) · cited 48× · AI/ML

**Wikidata**: [openalex:W3217280117](https://www.wikidata.org/wiki/openalex:W3217280117)  
**Source**: https://4ort.xyz/entity/a-method-for-the-identification-of-covid-19-biomarkers-in-human-breath-using-proton-transfer-reaction-time-of-flight-mas