In this 2019 photo provided by Zero to Three, a pediatrician checks on a child as their mother looks on at Children's National Hospital in Washington. Zero to Three's HealthySteps program aims to help children meet important milestones by placing early-childhood-development specialists in pediatric primary-care practices. (Courtesy of Zero to Three via AP) AP PROVIDES ACCESS TO THIS THIRD PARTY PHOTO SOLELY TO ILLUSTRATE NEWS REPORTING OR COMMENTARY ON FACTS DEPICTED IN IMAGE; MUST BE USED WITHI

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