Viruses and asthma exacerbations.
Papadopoulos
N G
NG
Johnston
S L
SL
D000328:Adult; D001249:Asthma / Q000821:virology*; D002648:Child; D006801:Humans; D012141:Respiratory Tract Infections / Q000150:complications* / Q000175:diagnosis; D014777:Virus Diseases / Q000150:complications* / Q000175:diagnosis