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Tom D. Y. Chin, John F. Foley, Irene L. Doto, Clifton R. Gravelle, Jean Weston, Morbidity and Mortality Characteristics of Asian Strain Influenza, Public Health Reports (1896-1970), Vol. 75, No. 2 (Feb., 1960), pp. 149-158
Chin et al. (Fri,) studied this question.
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