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. 2020 Aug 14;32(8):1609–1612. doi: 10.1007/s40520-020-01619-8

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© Springer Nature Switzerland AG 2020

This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

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Fig 1. — Vitamin D serum levels negatively correlated with COVID-19 cases per milloin population (A) and deaths per million population (B). The correlation between vitamin D levels and cases per million population had improved by 12 May 2020 when all countries had passed the peak of current wave of COVID-19 infections as compared to that on 8th April 2020 (See Table 2 for comparison of the linear regression analysis results) when in most countries it had not peaked (as per https://www.worldometers.info/coronovirus/)