Dr. Sean Semple, University of Stirling (IMAGE) University of Stirling Caption Dr. Sean Semple, Associate Professor at the ISM, led the work -- which is part of the broader Tobacco in Prisons Study (TIPS) -- alongside Ruaraidh Dobson, Research Assistant. Credit University of Stirling Usage Restrictions None 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.