@paulfrewDUP @PaulaJaneB @themrmatthew @duponline The impact of COVID-19 certification mandates on the number of cases of and hospitalizations with COVID-19 in the UK: A difference-in-differences analysis - Frontiers https://t.co/oinHgdtnxX
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@Ratjada212 @TanglerBOB @ceo_plus_ch @fm1today Ist es unbestritten? Auch nur in Schwurbleristan. https://t.co/S7tYEMCWKN
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RT @prieto_alhambra: Just published today: 'The impact of COVID-19 certification mandates on the number of cases of and hospitalizations wi…
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RT @prieto_alhambra: Just published today: 'The impact of COVID-19 certification mandates on the number of cases of and hospitalizations wi…