1. Bone and Mineral Research Unit, Hospital Universitario Central de Asturias, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), REDinREN-ISCIII, Departamento de Medicina, Universidad de Oviedo, Oviedo, Spain
2. Department of Nephrology, Tel Aviv Medical Center, Sackler Medical School, Tel Aviv University, Tel Aviv, Israel
3. Adult Nephrology Unit, Shaare Zedek Medical Center, Jerusalem, Israel
4. Department of Nephrology, Hospital Curry Cabral and Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
5. National Research Council (Italy), Clinical Epidemiology and Physiopathology of Renal Disease and Hypertension and Renal and Transplantation Unit, Ospedali Riuniti, Reggio Calabria, Italy
6. Department of Nephrology, Galway University Hospital and National University of Ireland, Galway, Ireland