1. Department of Surgery, University of Texas Southwestern Medical Center and Parkland Hospital, Dallas, TX - USA
2. Nephrology and Dialysis Unit, Carlo Urbani Hospital, Jesi - Italy
3. General Surgery Unit, Carlo Urbani Hospital, Jesi - Italy
4. Nephrology and Dialysis Unit, Ospedale San Carlo Borromeo, Milano - Italy
5. Department of Nephrology, University of Texas Southwestern Medical Center and Parkland Hospital, Dallas, TX - USA
6. Department of Surgery, Tulane University, New Orleans, LA - USA