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Lowrie DJ Jr, Giffin BF, Ventullo RM.Lowrie DJ Jr, et al. Among authors: giffin bf.Am J Trop Med Hyg. 1993 Nov;49(5):545-51. doi: 10.4269/ajtmh.1993.49.545.Am J Trop Med Hyg. 1993.PMID: 8250094