Ba T Ta, Khac H Dong, Q Do, Ngoc B Dao, Huy L Nguyen, Viet N Nguyen, Results of Bronchoscopic Lung Volume Reduction with One-way Valve in Patients with Severe Emphysema in Vietnam, Journal of Respiratory Diseases, Volume 1, Issue 1, 2018, Pages 08-17, ISSN 2642-9241, https://doi.org/10.14302/issn.2642-9241.jrd-18-1958. (https://openaccesspub.orgjrd/article/710) Keywords: Chronic obstructive pulmonary disease; Heterogeneous severe Emphysema; One-way bronchial valve.