Early Childhood Longitudinal Study-Birth Cohort: a welcome addition to the maternal and child health field and its data bases.
Kotelchuck
Milton
M
Department of Community Health Sciences, Boston University School of Public Health, 801 Massachusetts Avenue, Cross-town Room 434, Boston, MA 02118-2605, USA. kotelchuck@bu.edu
D002648:Child; D002669:Child Welfare; D019992:Databases as Topic; D006801:Humans; D009035:Mothers; D012106:Research