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Kumar A, Chen T, Pakkanen S, Kantele A, Söderlund-Venermo M, Hedman K, Franssila R.Kumar A, et al.PLoS One. 2011;6(10):e25751. doi: 10.1371/journal.pone.0025751. Epub 2011 Oct 3.PLoS One. 2011.PMID: 21991346Free PMC article.
Kantele A, Pakkanen SH, Siitonen A, Karttunen R, Kantele JM.Kantele A, et al. Among authors: pakkanen sh.Vaccine. 2012 Nov 26;30(50):7238-45. doi: 10.1016/j.vaccine.2012.10.002. Epub 2012 Oct 17.Vaccine. 2012.PMID: 23084770Free article.