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Prevalence of latent tuberculosis infection in Sudan: a case–control study comparing interferon-γ release assay and tuberculin skin test

Amani Osman Shakak, Eltahir Awad Gasim Khalil*, Ahmed Mudawi Musa, Kawthar Abd Eljalil Mohamed Salih, Abd Elgadir Ali Bashir, Ala Hassan Ahmed, Fath Elrahman Mohamed Idris, Ahmed Mohamed Elhassan and Tuberculosis Research Group/Sudan

BMC Public Health 2013, 13:1128  doi:10.1186/1471-2458-13-1128

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