When Treatment of Pulmonary Emphysema with Endobronchial Valves Did Not Work: Evaluation of Quantitative CT Analysis and Pulmonary Function Tests Before and After Valve Explantation. - Leppig JA; Song L; Voigt DC; Feldhaus FW; Ruwwe-Gloesenkamp C; Saccomanno J; Lassen-Schmidt BC; Neumann K; Leitner K; Hubner RH; Doellinger F (International journal of chronic obstructive pulmonary disease, 2022)