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Maas A, Meens J, Baltes N, Hennig-Pauka I, Gerlach GF.Maas A, et al. Among authors: gerlach gf.Vaccine. 2006 Nov 30;24(49-50):7226-37. doi: 10.1016/j.vaccine.2006.06.047. Epub 2006 Jul 7.Vaccine. 2006.PMID: 17027123