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. 2021 Jan 12:1–11. doi: 10.1080/07315724.2020.1856013

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© 2021 American College of Nutrition

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Figure 2. — Kaplan-Meier curve for crude cumulative in-hospital mortality by 25(OH) D levels (a) and serum calcium tertiles (b) in severe COVID-19 patients.