SM is supported by a Zabalduz predoctoral grant from UPV/EHU. The authors thank Simon Santa Cruz for critical review of the manuscript, and all the technicians from the R&D department for technical support.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Financial support: None declared.
Employment or leadership: AR, NT, BR, AM and DN are employed by Progenika Biopharma, S.A.
Honorarium: None declared.
Competing interests: The funding organisation(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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