Results of barium enema were more concordant among the siblings than among the controls, but the difference did not reach statistical significance (75 vs 62%, χ 2 = 2.90, df = 1, P = 0.08), with similar rates of available data in both groups (67.60 vs 73.91%, χ 2 = 1.15, df = 1, P = 0.28).
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A retrospective study on the influence of siblings' relatedness in Bolivian patients with chronic Chagas disease.
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