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Interim analysis of COVID-19 vaccine effectiveness against hospitalisation and death using electronic health records in six European countries, Corella, Susana Monge, Font\'e1n-Vela Mario, Nunes Baltazar, Kislaya Irina, Nardone Anthony, Sent\'eds Alexis, Kissling Esther, Humphreys James, Casado Itziar, Castilla Jes\'fas, et al. , 11/2023, Stockholm, Sweden, p.36, (2023)\par \par }