Yvonne Will, PhD, works in Pfizer's Exploratory Safety Differentiation Group in Groton, Connecticut. Prior to this position, she led Pfizer's Investigative Biochemical Toxicity Group within the Drug Safety Research and Development Department in La Jolla. Before joining Pfizer, Dr. Will worked on mitochondrial proteomics and physiology at MitoKor, Inc. Dr. Will has authored a host of articles and book chapters. She is a member of the Society of Toxicology and a frequent speaker for groups like ACT and World Pharmaceutical Congress.