Research funding: None declared.
Author contributions: LGGR designed the study, analyzed the data and wrote the manuscript. LCS provided statistical advice. VRA, MGM and MDAO collected the laboratory investigations. MDRM, MHO, MGM, MSRB and VCR contributed to the enrolment of patients and clinical data collection. All authors have reviewed critically the manuscript and have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: Authors state no conflict of interest.
Ethical approval and informed consent: The study was approved by the local Ethics Committee (E.O.2020-38 LAB2-COVID19) and performed under a waiver of informed consent and in accordance with the Declaration of Helsinki ethical guidelines.
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