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Carabin H, Escalona M, Marshall C, Vivas-Martínez S, Botto C, Joseph L, Basáñez MG.Carabin H, et al.Bull World Health Organ. 2003;81(7):482-90. Epub 2003 Sep 3.Bull World Health Organ. 2003.PMID: 12973640Free PMC article.
Carabin H, Gyorkos TW, Soto JC, Joseph L, Collet JP.Carabin H, et al.Child Care Health Dev. 2000 Nov;26(6):471-85. doi: 10.1046/j.1365-2214.2000.00168.x.Child Care Health Dev. 2000.PMID: 11091263Clinical Trial.