“…The theoretical framework used as methodological support in the studies has similar features, but Mendes, Silveira and Galvão (2008) were cited in 12 studies (7)(8)12,17,19,22,25,32,(36)(37)(38)(39) . Others authors used were: Whittemore and Knafl (2005), in 6 works (10,13,23,28,31,35) ; Ganong (1987), in five (8,23,27,39,41) ; Cooper (1989), in two (18,26) .…”