1. From the Section of Nephrology and Hypertension, 1st Department of Medicine, AHEPA Hospital (P.I.G.) and Department of Nephrology, Hippokration Hospital (P.A.S.), Aristotle University of Thessaloniki, Thessaloniki, Greece; and CNR-IFC, Clinical Epidemiology and Pathophysiology of Hypertension and Renal Diseases, Ospedali Riuniti, Reggio Calabria, Italy (C.Z.).