GOLD Staging System is Appropriate to Predict Mortality in Older People With Chronic Obstructive Pulmonary Disease Claudio Pedone, Renato Giua, Nicola Scichilone, Vincenzo Bellia, Raffaele Antonelli-Incalzi

Accuracy of a New Algorithm to Identify Asthma–COPD Overlap (ACO) Patients in a Cohort of Patients with Chronic Obstructive Airway Disease Luis Pérez de Llano, Borja G. Cosío, Marc Miravitlles, Vicente Plaza

Influence of the CYP2J2 Gene Polymorphisms on Chronic Obstructive Pulmonary Disease Risk in the Chinese Han Population Hui Lu, Yixiu Yang, Xianghong Chen, Cibing Wu, Jie Zhao, Qiong Feng, Xiaoli Zhou, Dongchuan Xu, Quanni Li, Huan Niu, Ping He, Jianfang Liu, Hongxia Yao, Yipeng Ding