COPD and Frailty: results of a study using the Delphi method Roberto Bernabéu Mora; Pilar Cubo Romano; Iñaki Martín Lesende; Elsa Naval Sendra; Juan José Soler-Cataluña; Francisco José Tarazona-Santabalbina;

Effect of the Antibody-mediated Immune Responses on COPD, Asthma, and Lung Function: A Mendelian Randomization Study Xu Guixing; Liu Yilin; Fan Huaying; Liang Fanrong; Li Dehua;

Short and Long-Term Impact of COVID-19 Infection on Previous Respiratory Diseases Eusebi Chiner-Vives; Rosa Cordovilla-Pérez; David de la Rosa-Carrillo; Marta García-Clemente; José Luis Izquierdo-Alonso; Remedios Otero-Candelera; Luis Pérez-de Llano; Jacobo Sellares-Torres; José Ignacio de Granda-Orive;