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. 2022 Mar 14:1–11. doi: 10.1080/23744235.2022.2043560

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© 2022 Society for Scandinavian Journal of Infectious Diseases

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 3. — (A) Proportions of types of interventions. Intervention categories are mutually exclusive (n = 59 trials). (B) Proportions of long COVID symptoms under investigation. Symptom categories are mutually exclusive (n = 59 trials).