Ian Thompson, SWOG (IMAGE) SWOG Caption This is Ian Thompson, MD, SWOG principal investigator of the Prostate Cancer Prevention Trial. Credit SWOG Cancer Research Network Usage Restrictions Please credit SWOG Cancer Research Network 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.