Marla Davis Bellamy is director of the Philadelphia CeaseFire program based at the Temple University School of Medicine. She also has served as codirector of Temple’s Center for Bioethics, Urban Health, and Policy. Earlier, Ms. Davis Bellamy was the executive director of the Anti-Violence Partnership of Philadelphia and served for five years as chief of staff of the Pennsylvania Department of Health. She earned a law degree at Temple University and a master of government administration degree from the University of Pennsylvania. Ana Diez Roux is the dean of Drexel University School of Public Health. She is a physician and epidemiologist who is known for her research on factors that determine population health. Before joining Drexel in 2014, Dr. Diez Roux was chair of the Department of Epidemiology at the University of Michigan. She is a member of the American Epidemiological Society, the Academy of Behavioral Medicine Research, and the Institute of Medicine of the National Academy of Sciences. Dr. Diez Roux earned an M.D. from the University of Buenos Aires in Argentina and a master’s degree in public health and a Ph.D. from The Johns Hopkins University School of Hygiene and Public Health. Julie Gerberding, an executive vice president of Merck, is an infectious disease expert and a former director of the U.S. Centers for Disease Control and Prevention (CDC). At Merck, she is responsible for global public policy, corporate responsibility, and global communications as well as the Merck for Mothers program and the Merck Foundation. Earlier, she was president of Merck Vaccines, overseeing the introduction of vaccines and efforts to broaden access to vaccines around the world. From 2002 to 2009, Dr. Gerberding led the CDC through more than 40 emergency responses to public health crises, including anthrax bioterrorism, SARS, and natural disasters. Dr. Gerberding earned an M.D. from Case Western Reserve University and a master’s degree in public health from the University of California at Berkeley. Dan Gottlieb is a psychologist and the host of “Voices in the Family,” an award-winning mental health call-in radio show aired on WHYY-FM. From 1993 until 2008, he wrote a highly regarded column for The Philadelphia Inquirer titled “Inside Out,” reflecting his perspective on the intersection of the events in our world and the events in our minds and hearts. Dr. Gottlieb lectures worldwide and has published four books, including the best-seller Letters to Sam: A Grandfather’s Lessons on Love, Loss, and the Gifts of Life. 31