Fredrik Hessulf (IMAGE) University of Gothenburg Caption Fredrik Hessulf, doctoral student at Sahlgrenska Academy, University of Gothenburg, and consultant physician in anesthesia and intensive care; Photo: Elin Lindström Credit Elin Lindström Usage Restrictions No restrictions. License Public Domain 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.