Fractional Exhaled Nitric Oxide Guided-Therapy in Chronic Obstructive Pulmonary Disease: A Stratified, Randomized, Controlled Trial Kang-Cheng Su; Hsin-Kuo Ko; Yi-Han Hsiao; Kun-Ta Chou; Yen-Wen Chen; Wen-Kuang Yu; Sheng-Wei Pan; Jia-Yih Feng; Diahn-Warng Perng;

Metabolic Changes After Bronchoscopic Lung Volume Reduction With Endobronchial Valves in COPD Patients Marieke C. van der Molen; Rein Posthuma; Anouk W. Vaes; Martijn A. Spruit; Harry R. Gosker; Alain R. Viddeleer; Tineke P. Willems; Lowie E.G.W. Vanfleteren; Dirk-Jan Slebos; Jorine E. Hartman;

Intravenous Iron Replacement Improves Exercise Tolerance in COPD: A Single-Blind Randomized Trial Clara Martín-Ontiyuelo; Anna Rodó-Pin; Daniel Echeverría-Esnal; Mireia Admetlló; Xavier Duran-Jordà; Mariela Alvarado; Joaquim Gea; Esther Barreiro; Diego A. Rodríguez-Chiaradía;