Jennifer Shu, MD, FAAP, is a practicing pediatrician, mother, medical editor in chief of HealthyChildren.org and a content reviewer for BabyCenter.com. She has been a health expert for CNN.com, WebMD.com, and the Parents magazine advisory board. She lives in Atlanta, Georgia. Laura A. Jana, MD, FAAP, is a pediatrician and mother of 3 who has been featured on such media outlets as CNN, The Today Show, US News and World Report, and NPR. She is on faculty at Penn State University's Prevention Research Center, has given 3 TED Talks and more than 150 talks and keynote addresses to such high-profile audiences as the World Bank and the British Parliament. She lives in Omaha, Nebraska.