If funds are forthcoming, the recruitment of study participants from the vanguard sites will begin in 2008, Scheidt said, and at the other sites in 2009.
"All study centers will attempt to recruit 250 women each year who are pregnant or likely to have a child," Scheidt said.
The first study results should start coming in within two to three years after the study gets going, Scheidt said. According to the organizers, results will continue to be released as participating children reach important developmental milestones.
Some of the 22 sites approved today include: Brown University, Providence, R.I.; Johns Hopkins University, Baltimore; Northwestern University, Chicago; University of California, Los Angeles; University of Hawaii at Manoa; University of New Mexico, Albuquerque; University of North Carolina at Chapel Hill; and the University of Texas Health Science Center, San Antonio.
For more on the study, visit the National Children's Study.
SOURCES: Oct. 4, 2007, teleconference with Duane Alexander, M.D., director, National Institute of Child Health and Human Development; Peter Scheidt, M.D., M.P.H., director, National Children's Study
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