Comorbidities and Mortality in Patients With COVID-19 Aged 60 Years and Older in a University Hospital in Spain Margarita Posso; Mercè Comas; Marta Román; Laia Domingo; Javier Louro; Cristina González; María Sala; Albert Anglès; Isabel Cirera; Francesc Cots; Víctor-Manuel Frías; Joaquim Gea; Robert Güerri-Fernández; Joan Ramon Masclans; Xavier Noguès; Olga Vázquez; Judith Villar-García; Juan Pablo Horcajada; Julio Pascual; Xavier Castells;

Determinants of COVID-19 Hospitalization Costs in a Referral Hospital for Respiratory Diseases David Martínez-Briseño; Rosario Fernández-Plata; Rogelio Pérez-Padilla; Anjarath Higuera-Iglesias; Manuel Castillejos-López; Guillermo Casas-Medina; Patricia Sierra-Vargas; Víctor Hugo Ahumada-Topete;

Impact of Chronic Respiratory Diseases on the Outcomes of COVID-19 Zhen-feng He; Nan-shan Zhong; Wei-Jie Guan;