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Donald J. Galagan, Frank E. Law, George E. Waterman, Grace Scholz Spitz, Dental Health Status of Children 5 Years after Completing School Care Programs: Richmond, Ind., and Woonsocket, R.I., Public Health Reports (1896-1970), Vol. 79, No. 5 (May, 1964), pp. 445-454
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Galagan et al. (1964) studied this question.
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