From this total, 38 were taken out as they were repeats from the databases, which left 17 articles figure 2.
De ese total, 38 fueron eliminados por ser repetidos en las bases de datos, restando al final 17 artículos Figura 2.
Desse total, 38 foram eliminados por serem repetidos nas bases de dados, restando ao final 17 artigos Figura 2.