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Vivas-Martinez S, Basáñez MG, Grillet ME, Weiss H, Botto C, García M, Villamizar NJ, Chavasse DC.Vivas-Martinez S, et al. Among authors: chavasse dc.Trans R Soc Trop Med Hyg. 1998 Nov-Dec;92(6):613-20. doi: 10.1016/s0035-9203(98)90784-2.Trans R Soc Trop Med Hyg. 1998.PMID: 10326102