Changes in tuberculin skin test positivity over 20 years in periurban shantytowns in Lima, Peru.
Martinez L, Arman A, Haveman N, Lundgren A, Cabrera L, Evans CA, Pelly TF, Saito M, Callacondo D, Oberhelman R, Collazo G, Carnero AM, Gilman RH.
Martinez L, et al. Among authors: oberhelman r.
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Am J Trop Med Hyg. 2013.
PMID: 23878185
Free PMC article.