Comparison of pulmonary function in patients with COPD, asthma-COPD overlap syndrome, and asthma with airflow limitation
International Journal of Chronic Obstructive Pulmonary Disease » Volume 11 » Issue 1 Yoshiaki Kitaguchi, Masanori Yasuo, Masayuki Hanaoka First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, JapanBackground: This study was…