Tzanakis, I Pras, A Kounali, D Mamali, V Kartsonakis, V and MayopoulouSymvoulidou, D Kallivretakis, N, Mitral annular calcifications in haemodialysis patients: a possible protective role of magnesium, Nephrology Dialysis Transplantation, (12), 2036-2037, 1997, Oxford University Press, 0931-0509, 1460-2385