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. 2020 Nov 2;100(2):187–193. doi: 10.1177/0022034520970536

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© International & American Associations for Dental Research 2020

This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure. — Comparison of Ct values between different clinical samples. (A) Patient matched samples, represented by the connecting lines. A blue line represents nasopharyngeal swab (NPS) pairing with gingival crevicular fluid (GCF) or saliva sample while a black line represents pairing between GCF and saliva. (B) All positive nasopharyngeal swabs (n = 33), GCF (n = 21), and saliva samples (n = 20) were compared. Mean Ct value is represented by a horizontal line in each group.