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https://www.acpjournals.org/doi/10.7326/M20-6231
https://smw.ch/op-eds/post/the-pandemic-gap
https://onlinelibrary.wiley.com/doi/10.1111/irv.12806
https://www.sciencedirect.com/science/article/pii/S0306987720323707
https://academic.oup.com/emph/advance-article/doi/10.1093/emph/eoaa018/5858135