The Clinical Use of Dupilumab for Elderly Patients With Severe COPD Exacerbations: A Case Series Hui Cai; Zi-xuan Chen; Hai-ying Ji; Qin-jun Shen; Jing Bi; Lin Tong; Shu-jing Chen; Lin-lin Wang; Jin-jun Jiang; Jing Zhang;

Asthma-COPD Overlap ¿ A Gateway to Biological Treatment Alicia Padilla-Galo; Marina Rubio-Moreno; Borja Valencia-Azcona;

Etiotypes in COPD: a pro/con debate Alvar Agusti; Marc Miravitlles;