1. University of Otago Christchurch; Department of Medicine; 2 Riccarton Ave PO Box 4345 Christchurch New Zealand 8140
2. Mario Negri Sud Consortium; Clinical Pharmacology and Epidemiology; Via Nazionale 8/A Santa Maria Imbaro Chieti Italy 66030
3. The University of Sydney; Sydney School of Public Health; Edward Ford Building A27 Sydney NSW Australia 2006
4. Glickman Urological and Kidney Institute, Cleveland Clinic; Department of Nephrology and Hypertension; Cleveland OH USA 44195
5. The Children's Hospital at Westmead; Cochrane Renal Group, Centre for Kidney Research; Locked Bag 4001 Westmead NSW Australia 2145
6. University of Bari; Department of Emergency and Organ Transplantation; Bari Italy 70100
7. Mario Negri Sud Consortium; Department of Clinical Pharmacology and Epidemiology; Santa Maria Imbaro Italy
8. Diaverum; Medical-Scientific Office; Lund Sweden. Amedeo Avogadro University of Eastern Piedmont; Division of Nephrology and Transplantation, Department of Translational Medicine; Novara Italy 28100