Comparison of three methods for respiratory virus detection between induced sputum and nasopharyngeal aspirate specimens in acute asthma

by Xiang, X., Qiu, D., Chan, S.H., Tan, W.C., Chan, K.P., Hegele, R.G.
Published 2012

Epidemiology of respiratory viruses in patients hospitalized with near-fatal asthma, acute exacerbations of asthma, or chronic obstructive pulmonary disease

by Tan, W.C., Xiang, X., Qiu, D., Ng, T.P., Lam, S.F., Hegele, R.G.
Published 2014