Hart, Nicholas Do chronic obstructive pulmonary disease (COPD) patients that snore have an increased risk of obstructive sleep apnea? [electronic resource] - International journal of chronic obstructive pulmonary disease 2007 - 400-1 p. digital Publication Type: Editorial ISSN: 1176-9106 Subjects--Topical Terms: HumansPulmonary Disease, Chronic ObstructiveRisk AssessmentSleep Apnea, Obstructive--etiologySnoringUnited Kingdom