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Nacul LC, Arthur P, Kirkwood BR, Morris SS, Cameiro AC, Benjamin AF.Nacul LC, et al.Trop Med Int Health. 1998 Aug;3(8):661-6. doi: 10.1046/j.1365-3156.1998.00259.x.Trop Med Int Health. 1998.PMID: 9735936Free article.Clinical Trial.
Nacul LC, Kirkwood BR, Carneiro AC, Pannuti CS, Magalhaes M, Arthur P.Nacul LC, et al.J Health Popul Nutr. 2005 Mar;23(1):6-15.J Health Popul Nutr. 2005.PMID: 15884747