Last September, the National Institute of Child Health and Human Development 
        announced seven sites where the study would start, including Queens in 
        New York. Recently, though, the Bush administration proposed to halt the 
        study as part of budget cuts. The cost for a national introduction in 
        2007 was projected to be $69 million.
      A cost-benefit analysis was performed as part of the study's preparation, 
        said Dr. Peter Scheidt, director of the study. "The childhood illnesses 
        and conditions that this study addresses are so burdensome and costly 
        to the nation," he said, "that any measurable impact the study 
        has, even on one of the major conditions for one year, would pay for the 
        cost of the study."
      Parents, meanwhile, will have to make up their own minds. "It's 
        not cheaper; it's not more convenient," Ms. Lilley said, "but 
        if there's even a chance it reduces our kids' health risks, we buy it."