Dr. Blair Grubb and Dr. William Gunning (IMAGE) University of Toledo Caption Dr. Blair Grubb, right, a cardiologist at The University of Toledo Medical Center and Distinguished University Professor in the UToledo College of Medicine and Life Sciences, and Dr. William Gunning, a professor of pathology in the UToledo College of Medicine and Life Sciences, continue to build evidence for the theory that postural orthostatic tachycardia syndrome, or POTS, is an autoimmune disorder. Credit Daniel Miller / The University of Toledo Usage Restrictions With credit to UToledo. 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.