Original Research

A Cross-Sectional Study in Patients with Severe COPD to Assess the Perception of Symptom Variability (COPVAR) in the Middle East and Africa

Kokturk N, Abuharbid W, Albanna AS, Gunen H, Gurgun A, Khadadah M, Malvolti E, Soliman M, van Zyl-Smit R, Zidouni N, Alzaabi A

International Journal of Chronic Obstructive Pulmonary Disease 2019, 14:2959-2970

Published Date: 20 December 2019