title: [Respiratory viruses as a cause of COPD exacerbations].
authors.affiliation: Hospital General Yagüe, Burgos, España. jlviejo@hgy.es
authors.forename: J L
authors.initials: JL
authors.lastname: Viejo Bañuelos
mesh_terms: D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000821:virology*; D012720:Severity of Illness Index; D014777:Virus Diseases / Q000150:complications*