Cross-sectional study of pain-related variables before and during the COVID-19 pandemic in patients with COPD Granados Santiago, María Martín-Núñez, Javier Heredia Ciuró, Alejandro Ortiz Rubio, Araceli Calvache Mateo, Andrés López López, Laura Valenza, Marie Carmen 2025-02-10T10:47:39Z 2025-02-10T10:47:39Z 2022 journal article https://hdl.handle.net/10481/102142 open access