1. Xenotransplantation Program; Department of Surgery; University of Alabama at Birmingham; Birmingham AL USA
2. Second Affiliated Hospital; University of South China; Hengyang City China
3. Thomas E. Starzl Transplantation Institute; University of Pittsburgh; Pittsburgh PA USA
4. Department of Organ Transplantation and General Surgery; Second Xiangya Hospital of Central South University; Changsha China
5. Department of Surgery; Institute of Clinical Sciences; Sahlgrenska Academy at University of Gothenburg; Gothenburg Sweden