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Borgdorff MW, Nagelkerke N, van Soolingen D, de Haas PE, Veen J, van Embden JD.Borgdorff MW, et al.Am J Epidemiol. 1998 Jan 15;147(2):187-95. doi: 10.1093/oxfordjournals.aje.a009433.Am J Epidemiol. 1998.PMID: 9457010Review.
Vynnycky E, Nagelkerke N, Borgdorff MW, van Soolingen D, van Embden JD, Fine PE.Vynnycky E, et al.Epidemiol Infect. 2001 Feb;126(1):43-62.Epidemiol Infect. 2001.PMID: 11293682Free PMC article.