Differences in arterial stiffness and target organ damage between native Greek patients and immigrants from Eastern European countries with essential hypertension. by Katsi, V, Varounis, C, Pavlidis, A, Alexopoulos, N, Vlachopoulos, C, Antoniades, C, Vamvakou, G, Tousoulis, D, Stefanadis, C, Kallikazaros, I