1 Division of Nephrology and Hypertension, 1st Department of Internal Medicine, AHEPA Hospital, School of Medicine, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece.
2 Department of Nephrology, School of Medicine, University of Ioannina, Ioannina, Greece.
3 Institute of Cardiovascular and Molecular Sciences, Glasgow University, Glasgow, UK.