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Jorge Toledano-Serrabona declares that he has no conflict of interest. Alba S\u00e1nchez-Torres reports grants, personal fees and non-financial support from MozoGrau (Valladolid, Spain) and Mundipharma (Cambridge, UK). Octavi Camps-Font reports grants, personal fees, and non-financial support from Mundipharma (Cambridge, UK) and Menarini Richerche (Florence, Italy). Prof. Dra. M\u00aa \u00c1ngeles S\u00e1nchez-Garc\u00e9s declares that she has no conflict of interest. Prof. Dr. Cosme Gay-Escoda reports grants, personal fees, and non-financial support from Mundipharma (Cambridge, UK) and Menarini Richerche (Florence, Italy).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This article does not contain any studies with human participants or animals performed by any of the authors.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"For this type of study, formal consent is not required.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}