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Association between the FEV1 and the history of having lived at high altitude, with regard to a cross- sectional study in patients with COPD due to tobacco consumption, in Lima and Callao. Interciencia méd. [Internet]. 2019 Jan. 5 [cited 2024 May 2];8(2):58-64. Available from: https://intercienciamedica.com/index.php/intercienciamedica/article/view/70