grams, family and community health services programs, and environmental and consumer safety and health-related regulatory programs. He practiced clinical medicine in Austin from 1992 to 2001 and served as health authority and chief medical officer for the Austin-Travis County Health and Human Services Department from 1994 to 1998. He served as chair of the IOM Committee on Childhood Obesity Prevention Actions for Local Governments, and as a member of the IOM Committee on Progress in Preventing Childhood Obesity and the IOM Committee on a Comprehensive Review of the DHHS Office of Family Planning Title X Program. He is a current member of the IOM Standing Committee on Childhood Obesity Prevention. Dr. Sanchez received his M.D. from the University of Texas Southwestern Medical School in Dallas, an M.P.H. from the University of Texas Health Science Center at Houston School of Public Health, and an M.S. in biomedical engineering from Duke University. He holds a B.S. in biomedical engineering and a B.A. in chemistry from Boston University. Dr. Sanchez is a fellow of the American Academy of Family Physicians and is certified by the American Board of Family Medicine.

Ellen Wartella, Ph.D., is Al-Thani professor of communication and professor of psychology and human development and social policy at Northwestern University. She directs the Center on Media and Human Development in the School of Communication at Northwestern. Previously, she was distinguished professor of psychology at the University of California, Riverside (UCR), where she also served as executive vice chancellor and provost. Dr. Wartella is a co-principal investigator on a 5-year, multisite research project entitled IRADS Collaborative Research: Influence of Digital Media on Very Young Children, funded by the National Science Foundation. She was a co-principal investigator for the National TV Violence Study and a co-principal investigator for the Children’s Digital Media Center project, funded by the National Science Foundation. She serves on the National Educational Advisory Board of the Children’s Advertising Review Unit of the Council of Better Business Bureaus, the board of directors for the World Summit on Media for Children Foundation, the PBS KIDS Next Generation Media Advisory Board, the board of trustees for Sesame Workshop, and advisory boards for Harvard’s Center on Media and Child Health and The Rudd Center for Food Policy and Obesity at Yale University. Dr. Wartella is a member of the American Psychological Association and the Society for Research in Child Development and is past president of the International Communication Association. Recent honors include election as a fellow of the American Association for the Advancement of Science and the Steven H. Chaffee Career Productivity Award from the International Communication Association. Dr. Wartella has served on the NRC/IOM Board on Children, Youth, and Families and the IOM Committee on Food Marketing and the



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