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Rosen L, Kern J. Hemagglutination and hemagglutination-inhibition with Coxsackie B viruses. Proc. Soc. Exp. Biol. Med. 107: 626-628, 1961. PubMed: 13743341

Wenner. . Am. J. Epidemiol. 82: 27-39, 1965.

Chanock RM, et al. Myxoviruses: Parainfluenza. Am. Rev. Respir. Dis. 88: 152-166, 1963. PubMed: 14064929