Nureddin Ashammakhi1, Elmahdi A Elkhammas, Anwarul Hasan. 1. 1 Department of Surgery, Oulu University Hospital, Oulu, Finland. 2 Division of Transplantation Surgery, Department of Surgery, The Ohio State University Wexner Medical Center, Comprehensive Transplant Center, Columbus, OH. 3 Department of Mechanical and Industrial Engineering, Qatar University, Doha, Qatar.