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Oskam L, Schoone GJ, Kroon CC, Lujan R, Davies JB.Oskam L, et al. Among authors: kroon cc.Trop Med Int Health. 1996 Aug;1(4):522-7. doi: 10.1046/j.1365-3156.1996.d01-95.x.Trop Med Int Health. 1996.PMID: 8765461Free article.