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Design and operation of the National Survey of Children with Special Health Care needs, 2001

Hyattsville, Md. : U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, [2003] 2003

Design and operation of the National Survey of Children with Special Health Care Needs, 2005-2006

Hyattsville, Md. : U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, [2009] 2008