Ci.ma.sa Group, Casa di Cura Maria Rosaria di Pompei and  Casa di Cura San Michele di Piano di Sorrento organised the congress “Metabolism of divalent ions in the nephropathic patients”, an informational event to attract attention to pathophysiology of the calcium-phosphorus metabolism, on the conquests of Great Trials and the Diagnostic – Therapeutic approach.  The congress, hold at Holiday Inn Hotel in Cava de Tirreni, had as spokesmen and moderators Italian and foreign specialists, such as Giovambattista Capasso, the President  of Campania-Sicily Nephrological Society, Maurizio gallieni, Director of U.O. Nephrology and Dialisys  at San Carlo Borromeo Hospital in Milan, Philippe Jaeger, from UCL Medical School of London and Piergiorgio Messa, Director of U.O. Nephrology at Policlinic of Milan.