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Tarkkanen AM, Allen BL, Williams PH, Kauppi M, Haahtela K, Siitonen A, Orskov I, Orskov F, Clegg S, Korhonen TK.Tarkkanen AM, et al. Among authors: allen bl.Infect Immun. 1992 Mar;60(3):1187-92. doi: 10.1128/iai.60.3.1187-1192.1992.Infect Immun. 1992.PMID: 1347287Free PMC article.