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