All statistical analyses were carried out with GraphPad Prism 4.0 GraphPad Softwares Inc., San Diego, CA, USA and differences of p < 0.05 were considered significant.
Todas los análisis estadísticos fueron realizados con el software GraphPad Prism 4.0 GraphPad Softwares Inc., San Diego, CA, EUA y las diferencias de p < 0,05 fueron consideradas significativas.
Todas as análises estatísticas foram realizadas com o software GraphPad Prism 4.0 GraphPad Softwares Inc., San Diego, CA, EUA e as diferenças de p < 0,05 foram consideradas significativas.