FP442CITRATE-ACIDIFIED DIALYSATE IMPROVES THE CALCIFICATION PROPENSITY OF HEMODIALYSIS PATIENTS: A MULTICENTER PROSPECTIVE RANDOMIZED CONTROLLED CROSS-OVER TRIAL. (18th May 2018) - ter Meulen, Karlien; Dekker, Marijke; Gauly, Adelheid; Pasch, Andreas; Konings, Constantijn; van der Sande, Frank; Gsponer, Isabelle; Leunissen, Karel; Bachtler, Matthias; Canaud, Bernard; Kooman, Jeroen