“…Children with GID are reported to be more likely to exhibit emotional/behavioral problems, particularly internalizing symptoms (Cohen-Kettenis, Owen, Kaijser, Bradley, & Zucker, 2003;Wallien, Swaab, & Cohen-Kettenis, 2007;Zucker, 2007;Zucker & Bradley, 1995), in which separation anxiety (Sreenivasan, 1985;Zucker, Bradley, & Lowry Sullivan, 1996) figures into the ontogenesis of GID according to some investigators (Coates, 1990;Coates & Person, 1985;Zucker & Bradley, 1995). Others, however, also report externalizing behavior problems (Coolidge et al, 2002;Wallien et al, 2007). On the other hand, adults with GID may exhibit high rates of DSM-IV co-morbidity, including mood disorders, substance-related disorders, anxiety disorders, and somatoform disorders (Hepp, Kraemer, Schnyder, Miller, & Delsignore, 2005), and 70% of Taiwanese adults with transsexualism reported at least one other DSM-III psychiatric diagnosis, particularly anxiety disorders (Chang et al, 2006).…”