Protective Effect of Long-Term CPAP Therapy on Cognitive Performance in Elderly Patients with Severe OSA: The PROOF Study Protective Effect of Long-Term CPAP Therapy on Cognitive Performance in Elderly Patients with Severe OSA: The PROOF Study Download OSA in Psychiatric Patients: Insomnia as a Concurrent Presentation of Autonomic Dysregulation in OSA Rates of OSA in Patients with Major Depressive Disorder Who Were Judged To Be Low Risk for OSA