Is region of country a useful variable for child health studies?
Guagliardo
Mark F
MF
Department of Prevention and Community Health, George Washington University School of Public Health and Health Services, Washington, DC 20052, USA. mguaglia@cnmc.org
Ronzio
Cynthia R
CR
D002648:Child; D002662:Child Health Services; D002669:Child Welfare; D003710:Demography; D006297:Health Services Accessibility; D006302:Health Services Research; D006304:Health Status; D006801:Humans; D014481:United States