Dr. Rebecca Gruchalla (IMAGE) UT Southwestern Medical Center Caption Dr. Rebecca Gruchalla, chief of allergy, serves as a principal investigator in a study evaluating a promising new medication researchers hope can reduce the severity and frequency of asthma attacks in inner-city children, a population known to have a high prevalence of severe asthma. Credit UT Southwestern Medical Center Usage Restrictions Please use credit line. 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.