Received the titles of Associate Professor in 1972 and Professor in 1977 at Hacettepe University Faculty of Medicine.
Is included in the worldwide list of the “20 Most Innovative Living Pediatric Surgeons”.
Introduced liver transplantation to the medical world as a routine and accepted treatment for adult and pediatric patients with liver failure.
In 1983, launched the Liver Transplantation Program at the University of Wisconsin and directed it for 25 years.
Performed transplants including Wisconsin’s first liver transplant, the first reduced-size (adult-to-child) liver transplant, the first “cluster” (all organs in the abdomen) transplant, the first adult-to-adult living-donor liver transplant, the first pediatric liver transplant and a liver transplant in the youngest child patient in the state, totaling more than 1,500 transplants.
Also pioneered the use of Belzer UW organ preservation solution in clinical liver transplantation.