Items where Author is "Helbok, R."
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(2022) Estimated Global Proportions of Individuals With Persistent Fatigue, Cognitive, and Respiratory Symptom Clusters Following Symptomatic COVID-19 in 2020 and 2021. Jama-Journal of the American Medical Association. pp. 1604-1615. ISSN 0098-7484
(2022) A global systematic analysis of the occurrence, severity, and recovery pattern of long COVID in 2020 and 2021. medRxiv : the preprint server for health sciences.