1 Institute of Clinical Physiology-Reggio Cal Unit, National Research Council, Reggio Calabria, Italy.
2 Department of Nephrology, Hippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
3 Clinic for Internal Medicine, Department of Dialysis, University Clinical Centre Maribor, Maribor, Slovenia.
4 Department of Nephrology and Internal Medicine, Institute of Medical Sciences, University of Opole, Opole, Poland.
5 Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wrocław, Poland.
6 Department of Internal Medicine IV, Saarland University Medical Center, Homburg/Saar, Germany.
7 Department of Nephrology, University Hospital of Ioannina, Ioannina, Greece.
8 Nephrology Unit, Shaare Zedek Medical Center, Jerusalem, Israel.
9 Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
10 IASIO Hospital-General Clinic of Kallithea, Kallithea, Greece.
11 Athens Kidney Institute NEPHROEXPERT, Athens, Greece.
12 Department of Nephrology, CHU Ambroise Paré, AP-HP, Paris, France.
13 Centre Epidémiologie et Santé Publique, Institut National de la Santé et de la Recherche Médicale (INSERM) U1018, Team 5, Villejuif, France.
14 Division of Nephrology and Dialysis, University of Verona, Verona, Italy.
15 Bellvitge's University Hospital-Hospitalet, Barcelona, Spain.
16 Red de Investigación Renal, Instituto Salud Carlos III, Madrid, Spain.
17 Nephrology Unit, Department of Medicine and Surgery, University Hospital Parma, Parma, Italy.
18 FCRIN-INI-CRCT Network (French Clinical Research Infrastructure Network-Investigation Network Initiative-Cardiovascular and Renal Clinical Trialists), Nancy, France.
19 Department of Nephrology, Hôpitaux Universitaires de Strasbourg 1, Strasbourg, France.
20 Clinique Saint-Augustin-Centre de Traitement des Maladies Rénales (CTMR), ELSAN, Bordeaux, France.
21 Department of Clinical Epidemiology, Biostatistics, and Bio-informatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
22 Department of Clinical Epidemiology, Leiden University Medical Centre, Leiden, The Netherlands.
23 Institute of Clinical Physiology-Pisa, National Research Council, Pisa, Italy.
24 Centre Hospitalier F.H. Manhès, Fleury-Mérogis, France.
25 Renal Research Institute, New York, NY, USA.
26 Institute of Biology and Molecular Genetics (BIOGEM), Ariano Irpino, Italy.
27 Associazione Ipertensione Nefrologia e Trapianto Renale (IPNET), Reggio Cal, Italy.