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Zijlstra EE, Nur Y, Desjeux P, Khalil EA, El-Hassan AM, Groen J.Zijlstra EE, et al. Among authors: khalil ea.Trop Med Int Health. 2001 Feb;6(2):108-13. doi: 10.1046/j.1365-3156.2001.00680.x.Trop Med Int Health. 2001.PMID: 11251906Free article.
Satti IN, Osman HY, Daifalla NS, Younis SA, Khalil EA, Zijlstra EE, El Hassan AM, Ghalib HW.Satti IN, et al. Among authors: khalil ea.Vaccine. 2001 Feb 28;19(15-16):2100-6. doi: 10.1016/s0264-410x(00)00401-1.Vaccine. 2001.PMID: 11228382Clinical Trial.