“…Moreover, Rady, Salama, Elkholy, and Shawky (2013a, 2013b, 2013c, 2013d) showed that 57.32% of personality disorders patients, 17.71% of mood disorders patients, 17.42% of anxiety disorders patients and 16.67% of schizophrenic patients of a psychiatric hospital of Egypt suffered from dual diagnosis. It is often observed that patients with dual diagnosis present more than one mental disorder along with the substance use disorder (e.g., Ding, Yang, Cheng, Schiltz, summers, and Skinstad, 2011; Lechner et al, 2013) [11][12][13][14][15][16].…”