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Research Article Free access | 10.1172/JCI101043
Normal Child Development Study of the Department of Diseases of Children, and the Department of Neurology, Columbia University, New York City
Babies Hospital, New York City
Find articles by Day, R. in: JCI | PubMed | Google Scholar
Normal Child Development Study of the Department of Diseases of Children, and the Department of Neurology, Columbia University, New York City
Babies Hospital, New York City
Find articles by Klingman, W. in: JCI | PubMed | Google Scholar
Published May 1, 1939 - More info