Fatigue and symptom-based clusters in post COVID-19 patients: a multicentre, prospective, observational cohort study.

"Declarations Ethics approval and consent to participateThis study was approved by the ethical board of the Amsterdam UMC, reference number NL74701.018.20. All participants gave their written informed consent. Consent for publicationNot applicable. Competing interestsM.E.B.C., L.D.B., N.B., R.J.H.C.G.B., L.H., L.C.E.N. and A.H.M.: Public and private partners in the P4O2 consortium, as listed under ‘funding’. M.A.S. reports grants from Lung Foundation Netherlands, grants from Stichting Astma Bestrijding, grants and fees from Boehringer Ingelheim, and grants and personal fees from AstraZeneca, outside the submitted work. All payments were done to M.A.S. employer. S.B., A.W.V. and Q.D. declare that they have no competing interests. Competing interests M.E.B.C., L.D.B., N.B., R.J.H.C.G.B., L.H., L.C.E.N. and A.H.M.: Public and private partners in the P4O2 consortium, as listed under ‘funding’. M.A.S. reports grants from Lung Foundation Netherlands, grants from Stichting Astma Bestrijding, grants and fees from Boehringer Ingelheim, and grants and personal fees from AstraZeneca, outside the submitted work. All payments were done to M.A.S. employer. S.B., A.W.V. and Q.D. declare that they have no competing interests."

"Funding Partners in the Precision Medicine for more Oxygen (P4O2) consortium are the Amsterdam UMC, Leiden University Medical Center, Maastricht UMC + , Maastricht University, UMC Groningen, UMC Utrecht, Utrecht University, TNO, Abbvie, Aparito, Boehringer Ingelheim, Breathomix, Clear, Danone Nutricia Research, Fluidda, Ncardia, Olive, Ortec Logiqcare, Philips, Proefdiervrij, Quantib-U, RespiQ, Roche, Smartfish, SODAQ, Thirona, TopMD, Lung Alliance Netherlands (LAN) and the Lung Foundation Netherlands (Longfonds). The consortium is additionally funded by the PPP Allowance made available by Health ~ Holland, Top Sector Life Sciences & Health (LSHM20104; LSHM20068), to stimulate public–private partnerships and by Novartis."