COSMOS is sponsored by the Bone and Mineral Research Unit (Hospital Universitario Central de Asturias), SAFIM (Sociedad Asturiana Fomento Investigaciones Óseas), the European Renal Association-European Dialysis and Transplant Association, the National Program of I+D+I 2008–2011 and Instituto de Salud Carlos III (ISCIII), the ISCIII Retic REDinREN (RD06/0016/1013 and RD12/0021/1023), the ISCIII (ICI14/00107 and PI17/00384), Fondo Europeo de Desarrollo Regional (FEDER), Plan Estatal de I+D+I 2013–2016, Plan de Ciencia, Tecnología e Innovación 2013–2017 del Principado de Asturias (GRUPIN14-028) and Fundación Renal Ínigo Álvarez de Toledo (FRIAT)Carrero, J.J., Cabezas-Rodríguez, I., Qureshi, A.R., Floege, J., Ketteler, M., London, G., Locatelli, F., Memmos, D., Goldsmith, D., Ferreira, A., Nagy, J., Teplan, V., Martínez-Salgado, C., Fernández-Martín, J.L., Zoccali, C., Cannata-Andia, J.B., on behalf of the COSMOS grou