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. 1969;41(3-4-5):564–566.
A field trial of Hong Kong-strain influenza vaccine in Seattle schoolchildren*
From the Department of Preventive Medicine, University of Washington, Seattle, Washington 98105, USA. This study was supported by the Vaccine Development Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, US Department of Health, Education, and Welfare, under Contract No. PH 43-63-562.