“…There have been at least seven such studies in the DSM-IV era (Chiu et al, 2006;Cohen-Kettenis, Owen, Kaijser, Bradley, & Zucker, 2003;Cohen-Kettenis et al, 2006;Fridell, OwenAnderson, Johnson, Bradley, & Zucker, 2006;Johnson et al, 2004;Wallien, Veenstra, Kreukels, & Cohen-Kettenis, 2009;). In some of these studies, data on specificity and sensitivity have been examined.…”