1. Department of Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. University of Pittsburgh Medical Center, University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Department of Surgery, ISMETT-Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, UPMC Italy, Palermo, Italy.
4. Department of Bioengineering, McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.