This assignment delves into the topic of sleep disorders, specifically focusing on the effects of extended-release quetiapine fumarate on long-term functioning and sleep quality in patients with Generalized Anxiety Disorder (GAD). The provided references include studies and research papers related to sleep disturbance and chronic widespread pain, disease state management for insomnia, delivering CBT for insomnia in psychosis, and more. These sources provide valuable insights into the management of sleep disorders and their impact on psychiatric clinics.