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Keitel WA, Kester KE, Atmar RL, White AC, Bond NH, Holland CA, Krzych U, Palmer DR, Egan A, Diggs C, Ballou WR, Hall BF, Kaslow D.Keitel WA, et al. Among authors: atmar rl.Vaccine. 1999 Oct 14;18(5-6):531-9. doi: 10.1016/s0264-410x(99)00221-2.Vaccine. 1999.PMID: 10519944Clinical Trial.