1. Division of Plastic and Reconstructive Surgery Department of Surgery School of Medicine University of Colorado Denver Aurora CO USA
2. Division of Transplant Surgery Department of Surgery School of Medicine University of Colorado Denver Aurora CO USA
3. Center for Transplantation Sciences Massachusetts General Hospital and Harvard Medical School Boston MA USA
4. College of Animal Science and Veterinary Medicine Shanxi Agricultural University Taigu China
5. Transplantation Pathology Department of Pathology School of Medicine University of Colorado Denver Aurora CO USA