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Hace 2 horas · Chronic obstructive pulmonary disease (COPD) is defined as a heterogeneous lung condition characterized by chronic respiratory symptoms and persistent, often progressive airflow limitation [].Respiratory symptoms, mainly dyspnea on exertion, cough, and sputum result from abnormalities of the airways (bronchitis, bronchiolitis) and/or alveoli (emphysema) [].
Hace 2 horas · [Lambert-Eaton syndrome without calcium channel autoantibodies] 520 Active principle of croton oil. VII. Phorbol 500 Investigation of Factors Associated with Subclinical Infections of Giardia duodenalis and Cryptosporidium canis in Kennel-Housed Dogs (Canis lupus familiaris) 500 The three stars each: the Astrolabes and related texts 500 ...
