The Influence of Lung Function and Respiratory Muscle Strength on Quadriceps Muscle Fatigability in COPD Patients Under Long-term Oxygen Therapy Mara Paneroni, Alessandro Cavicchia, Salvi Beatrice, Laura Bertacchini, Massimo Venturelli, Michele Vitacca

Frequency of Osteoporosis and Vertebral Fractures in Chronic Obstructive Pulmonary Disease (COPD) Patients Mariana R. Gazzotti, Carolina M. Roco, Cristiane O. Pradella, Oliver A. Nascimento, Elias F. Porto, Mariana Adas, Marise Lazaretti-Castro, José R. Jardim

Prevalence and Determinants of COPD in Spain: EPISCAN II Joan B. Soriano, Inmaculada Alfageme, Marc Miravitlles, Pilar de Lucas, Juan José Soler-Cataluña, Francisco García-Río, Ciro Casanova, José Miguel Rodríguez González-Moro, Borja G. Cosío, Guadalupe Sánchez, Julio Ancochea