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Craig Hersh MD Profile picture
Craig Hersh MD
@craig_hersh
Physician-scientist @BrighamWomens @harvardmed #COPD #Alpha1 #networkmedicine he/him. Tweets are not medical advice, nor is FB.
Jun 22, 2020 • 12 tweets • 3 min read
I'm very concerned about the rising rates of #COVID19 in AZ, TX, etc. So here is my rant about masks. 1/n I'm a lung doctor and I feel like I know a lot about oxygen. For example, see here: link.springer.com/article/10.100…