Screening for Obstructive Sleep Apnea in Commercial Drivers Using EKG-Derived Respiratory Power Index Screening for Obstructive Sleep Apnea in Commercial Drivers Using EKG-Derived Respiratory Power Index Download Poor Outcomes Among Patients With Chronic Obstructive Pulmonary Disease With Higher Risk for Undiagnosed Obstructive Sleep Apnea in the LOTT Cohort Short Sleep Duration Is Associated With Increased Serum Homocysteine: Insights From a National Survey