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History
- Accepted March 31, 2009
- Published online September 28, 2009.
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- previous version (September 28, 2009 - 03:01).
- You are viewing the most recent version of this article.
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Copyright © 2009 by the American Academy of Pediatrics
Author Information
- aDivision of Neonatology, Department of Pediatrics
- cDivision of Clinical Epidemiology, Department of Epidemiology and Biostatistics
- dDivision of General Pediatrics, Department of Pediatrics, University of California, San Francisco, California
- bDivision of Research, Perinatal Research Unit, Kaiser Permanente Medical Care Program, Oakland, California