title: Letter to Editor.
authors.affiliation: GITMI Group of Research in Minimally Invasive Techniques, Department of Animal Pathology, Facultad de Veterinaria, University of Zaragoza, 177, Miguel Servet, 50013, Zaragoza, Spain. mgregori@unizar.es.|Bioengineering, Biomaterials & Nanomedicine CIBER (CIBER-BBN), Zaragoza, Spain. mgregori@unizar.es.
authors.forename: Miguel Ángel
authors.identifier: 0000-0002-5618-7519
authors.initials: MÁ
authors.lastname: de Gregorio
authors.affiliation: GITMI Group of Research in Minimally Invasive Techniques, Department of Animal Pathology, Facultad de Veterinaria, University of Zaragoza, 177, Miguel Servet, 50013, Zaragoza, Spain.
authors.forename: Alicia
authors.initials: A
authors.lastname: Laborda