Reply - Letter to the editor - 'Beetroot juice intake positively influenced gut microbiota and inflammation but failed to improve functional outcomes in adults with Long COVID'

Affiliations

• ¹ Department of Geriatrics, Orthopedics and Rheumatology, Università Cattolica del Sacro Cuore, L.go F. Vito 1, 00168, Rome, Italy; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, L.go A. Gemelli 8, 00168, Rome, Italy. Electronic address: riccardo.calvani@unicatt.it.
• ² Department of Geriatrics, Orthopedics and Rheumatology, Università Cattolica del Sacro Cuore, L.go F. Vito 1, 00168, Rome, Italy; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, L.go A. Gemelli 8, 00168, Rome, Italy. Electronic address: emanuele.marzetti@unicatt.it.
• ³ Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, L.go A. Gemelli 8, 00168, Rome, Italy. Electronic address: matteo.tosato@policlinicogemelli.it.
• ⁴ Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy; NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy. Electronic address: ottavia.giampaoli@uniroma1.it.
• ⁵ NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy; Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy. Electronic address: michele.derosa@uniroma1.it.
• ⁶ NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy; Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy. Electronic address: federico.marini@uniroma1.it.