abstract: [This corrects the article doi: 10.1590/1413-81232015213.06472015] [This corrects the article doi: 10.1590/1413-81232015216.07672016] [This corrects the article doi: 10.1590/1413-81232015216.08752016] [This corrects the article doi: 10.1590/1413-81232015216.08172016].