EXCESS PNEUMONIA-INFLUENZA MORTALITY BY AGE AND SEX IN THREE MAJOR INFLUENZA A2 EPIDEMICS, UNITED STATES, 1957–58, 1960 AND 19631

Abstract
ROBERT E. SERFUNG, IDA L. SHERMAN, WILLIAM J. HOUSEWORTH; EXCESS PNEUMONIA-INFLUENZA MORTALITY BY AGE AND SEX IN THREE MAJOR INFLUENZA A2 EPIDEMICS, UNITED STA

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