Ari Brown, MD, is a board-certified pediatrician in Austin, Texas, who has been in private practice for more than thirty years. She has appeared on countless national shows including NBC's Today show and has authored articles published in the Wall Street Journal, Newsweek, and Parents magazine. She is a spokesperson of the American Academy of Pediatrics, a sought-after speaker and consultant, and the author of the bestselling 411 for Parents series including Baby 411, Toddler 411, and Expecting 411.

Denise Fields is the bestselling author of Baby Bargains and has been featured as a parenting expert on Oprah and in The Wall Street Journal.