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Authors
Wirth, Marielle https://orcid.org/0009-0006-4204-6236
Haastert, Burkhard
Linnenkamp, Ute
Andrich, Silke
Icks, Andrea
Pricoco, Rafael
Behrends, Uta
De Bock, Freia https://orcid.org/0000-0002-7089-8106
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Funding
Funding for this research was provided by:
Universitätsklinikum Düsseldorf. Anstalt öffentlichen Rechts
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Article History
Received: 14 October 2025
Accepted: 16 February 2026
First Online: 26 February 2026
Declarations
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: UB heads the MCFC and receives funding for research projects on ME/CFS and PCC by the German and Bavarian Government as well as from private donors and the Lost Voices Foundation. She also received funding for lectures on ME/CFS and PCC. MW received a PhD scholarship and a conference travel grant from the Lost Voices Foundation, which is gratefully acknowledged. The funders had no role in the design of the study, the analysis, interpretation of data, or the writing of the manuscript. All other authors declare no competing interests.
: BayNET for ME/CFS received ethical approval from the Ethics committee of the Medical Faculty of the Heinrich-Heine-University Düsseldorf (2023–2413), which deemed exempt from requiring written informed consent, as we used routinely collected statutory health insurance data. The study was conducted in accordance with the Declaration of Helsinki.
