| http://www.w3.org/ns/prov#value | - Statistical analysis, including analysis of variance with Bonferroni post hoc correction or Kruskal-Wallis for evaluating intergroup differences, c2 or Fisher exact test for assessing differences in frequency distributions, as well as Kaplan-Meier survival curves, was performed with Stata software (Stata 5.0; Stata Corporation, College Station, Tex).
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