Dr. Margaret Warner is an injury epidemiologist at the Centers for Disease Control and Prevention, National Center for Health Statistics, Division of Vital Statistics, Mortality Statistics Branch. Her research focuses on fatal drug overdose, suicide, and other sudden death. She speaks, publishes, and consults on the analysis and interpretation of health data, especially vital statistics mortality data. As part of her work on surveillance, Dr. Warner is coordinating and promoting public health surveillance efforts in the offices of medical examiners, coroners, and forensic toxicologists to improve quality, timeliness, and consistency of drug overdose data. Dr. Warner received her doctorate from the Johns Hopkins School of Public Health and studied injury epidemiology on a Fulbright Fellowship at the University of Otago in New Zealand.