Male Sex Is Associated With Severe Pulmonary Hypertension and Worse Outcome in Chronic Obstructive Pulmonary Disease Patients Referred for Right Heart Catheterization. - Shah, Syed Sardar; Rehman, Attiq Ur; Amin, Safa; Nawaz, Mahnoor; Laiba, Aqdas (Pulmonary Circulation, 2026)