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. 2021 Dec 24;15(4):831–837. doi: 10.1111/cts.13211

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© 2021 The Authors. Clinical and Translational Science published by Wiley Periodicals LLC on behalf of American Society for Clinical Pharmacology and Therapeutics.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Reasons eligible participants approached from the New York regional site gave in declining enrollment in ColCorona‐US. Contact was attempted of 1710 eligible participants from the New York regional site during the time period of April through June. Initial contact was unable to be made with 687 patients, whereas 451 were determined to be not eligible based on further review of eligibility criteria during the screening process. There was a total of 572 eligible patients for which initial contact was successfully made (although 42 of those patients were lost to follow‐up before they could be enrolled)