1. Department of Clinical and Fundamental Nursing, Faculty of Nursing, University of Barcelona, Barcelona, Spain
2. Nutrition and Food Safety Research Institute (INSA-UB), University of Barcelona, Barcelona, Spain
3. Department of Clinical Research, Laboratorios Viñas, Barcelona, Spain
4. Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain
5. Division of Rheumatology, ME/CFS Clinical Unit, Vall d’Hebron University Hospital, Barcelona, Spain
6. Division of Rheumatology, Research Unit in ME/CFS and Long COVID, Vall d’Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
7. Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain