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Zeledón R, Guardia VM, Zúñiga A, Swartzwelder JC.Zeledón R, et al. Among authors: swartzwelder jc.J Med Entomol. 1970 Aug 25;7(4):462-9. doi: 10.1093/jmedent/7.4.462.J Med Entomol. 1970.PMID: 5485387No abstract available.