Financial & competing interests disclosure
Financial support was received from the TV3 Marató (01/810) and Instituto de Salud Carlos III-FEDER (FIS PI06/0940, RTA RD12/0028/0009). The author‘s work was independent of the sources of funding. The authors state that there were no conflicts of interest directly relevant to the content of the article. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.