Dr. O’Donnell is an Associate Professor of Cell & Molecular Medicine at the Rush Medical College in Chicago. He is a Diplomate of the American Board of Clinical Pharmacology He is a co-Editor of O’Donnell’s Drug Injury IVth Ed. He consults and testifies for plaintiffs and defendants (~ 400 trials, several thousand consultations) in drug related matters throughout the United States . He resides in Barrington Hills, IL.