CLINICAL FEATURES AND SUBCLINICAL CHARACTERISTICS OF PATIENTS WITH OVERLAP SYNDROME OF OBSTRUCTIVE SLEEP APNEA AND CHRONIC OBSTRUCTIVE PULMONARY DISEASE AT THE NATIONAL LUNG HOSPITAL. YHCĐ [Internet]. 2026 Oct. 31 [cited 2026 Nov. 8];67(10). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/6902