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Guttorm Toverud, The Influence of War and Postwar Conditions on the Teeth of Norwegian School Children. III. Discussion of Food Supply and Dental Condition in Norway and Other European Countries, The Milbank Memorial Fund Quarterly, Vol. 35, No. 4 (Oct., 1957), pp. 373-459
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Guttorm Toverud (1957) studied this question.
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