title: [The experiment error in scientific research: quantification of contributing factors].
mesh_terms: D000704:Analysis of Variance; D000886:Anthropometry; D001161:Arteriosclerosis; D006801:Humans; D012106:Research / Q000592:standards*; D014801:Vitamin A / Q000097:blood
chemical_list: D014801:Vitamin A
vernacular_title: El error experimental en la investigación científica: cuantificación de elementos contribuyentes