John L. LaMattina, PhD, retired as president of Pfizer Global Research and Development in 2007 where he managed more than 13,000 scientists and support professionals in the United States, Europe, and Asia. Dr. LaMattina has received numerous awards including an Honorary Doctor of Science degree from the University of New Hampshire.

Patricia Frank is President of Patricia Frank & Associates, Inc., a consulting firm founded in 1993 that assists companies in the development and registration of human and veterinary pharmaceutical agents. She is a past president of both the American College of Toxicology and the Roundtable of Toxicology Consultants.

M. Alice Ottoboni lectures, writes, and consults in the field of toxicology. As Staff Toxicologist with the California State Department of Public Health for over twenty years, she originated, designed, and performed numerous toxicological studies of environmental factors of importance to public health. She is the author of the previous editions of The Dose Makes the Poison.