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. 2020 Aug 6;268(3):773–784. doi: 10.1007/s00415-020-10121-0

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© The Author(s) 2020

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Fig. 2 — Flowchart on identification of studies on COVID-19 eligible for quantitative data synthesis. PRISMA flowchart illustrating systematic screening and selection process of published observational studies reporting on laboratory-confirmed COVID-19 patients with data available on disease severity and past history of CVD