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Sheikh K, Porter J, Kielmann K, Rangan S.Sheikh K, et al. Among authors: porter j.Trans R Soc Trop Med Hyg. 2006 Apr;100(4):312-20. doi: 10.1016/j.trstmh.2005.04.023. Epub 2006 Jan 24.Trans R Soc Trop Med Hyg. 2006.PMID: 16438997
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Porter J, Kessler C.Porter J, et al.Trans R Soc Trop Med Hyg. 1995 May-Jun;89(3):241-2. doi: 10.1016/0035-9203(95)90522-7.Trans R Soc Trop Med Hyg. 1995.PMID: 7660423No abstract available.