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. 2021 Jul 31;134(11):1380–1388.e3. doi: 10.1016/j.amjmed.2021.06.034

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Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Correlation between COVID-19 hospitalization volume and risk-standardized in-hospital case-fatality rate. Spearman correlation for hospital volume and risk-standardized mortality is 0.18, P = .09. Labeled points represent risk-standardized in-hospital case-fatality rate for the median hospital based on volume in each quartile. COVID-19 = coronavirus disease 2019.