UH study finds masks don't stop oxygen from getting into the body<br/><a href="https://www.wcnc.com/article/news/health/coronavirus/university-hospitals-study-masks-do-not-prevent-oxygen-from-getting-into-the-body/95-63bc00a6-2bbc-422d-90d1-61b259dca83b" rel="noreferrer noopener" target="_blank">wcnc.com</a>