Maddison and Johnathan Russell (IMAGE) University of Oklahoma Caption Johnathan Russell holds his 3-year-old daughter Maddison while talking to reporters at the University of Oklahoma Health Sciences Center about his childhood cancer and his fear that radiation treatment would affect his children. Credit The Oklahoman Usage Restrictions Credit for photo must be given to The Oklahoman License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.