Contribution of Psychological Factors in Dropping out from Chronic Obstructive Pulmonary Disease Rehabilitation Programs. - Tselebis, Athanasios; Kosmas, Epaminondas; Bratis, Dionisios; Pachi, Argiro; Ilias, Ioannis; Harikiopoulou, Maria; Theodorakopoulou, Elpida; Velentzas, Konstantinos; Dumitru, Silvia; Moussas, Georgios; Siafakas, Nikolaos; Tzanakis, Nikolaos (BioMed Research International, 2014)