This work was supported by the Instituto de Salud Carlos III (Spanish Ministry of Economy and Competitiveness) under grants RD12/0043/0030, RD12/0043/0017, PI13/02741 and PI17/02009; and the Government of the Principality of Asturias under grant GRUPIN14-071, all of them co-financed by the European Regional Development Fund. J.C.B.M. acknowledges his MSc thesis award from AINDACE (Ayuda a la Investigacion del Dano Cerebral) foundation (Spain). M.R.M.G acknowledges her postdoctoral fellowship (2013-2586/001-001-EMA2) from the PUEDES Program (European Commission). Y.P. acknowledges her predoctoral fellow (FI14/00405) from the Instituto de Salud Carlos III (Spanish Ministry of Economy and Competitiveness).