Zhou J, Wang X, Lee S, Wu WKK, et al. Proton pump inhibitor or famotidine use and severe COVID-19 disease: a propensity score-matched territory-wide study. Gut 2020 Dec 4. pii: gutjnl-2020-323668. doi: 10.1136/gutjnl-2020-323668.
PMID: 33277346