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Power UF, Nguyen TN, Rietveld E, de Swart RL, Groen J, Osterhaus AD, de Groot R, Corvaia N, Beck A, Bouveret-Le-Cam N, Bonnefoy JY.Power UF, et al.J Infect Dis. 2001 Dec 1;184(11):1456-60. doi: 10.1086/324426. Epub 2001 Nov 13.J Infect Dis. 2001.PMID: 11709789Clinical Trial.