APA

in't Veen J. C., Smits H. H., Hiemstra P. S., Zwinderman A. E., Sterk P. J. & Bel E. H. (19990811). Lung function and sputum characteristics of patients with severe asthma during an induced exacerbation by double-blind steroid withdrawal. : American journal of respiratory and critical care medicine.

Chicago

in't Veen J C, Smits H H, Hiemstra P S, Zwinderman A E, Sterk P J and Bel E H. 19990811. Lung function and sputum characteristics of patients with severe asthma during an induced exacerbation by double-blind steroid withdrawal. : American journal of respiratory and critical care medicine.

Harvard

in't Veen J. C., Smits H. H., Hiemstra P. S., Zwinderman A. E., Sterk P. J. and Bel E. H. (19990811). Lung function and sputum characteristics of patients with severe asthma during an induced exacerbation by double-blind steroid withdrawal. : American journal of respiratory and critical care medicine.

MLA

in't Veen J C, Smits H H, Hiemstra P S, Zwinderman A E, Sterk P J and Bel E H. Lung function and sputum characteristics of patients with severe asthma during an induced exacerbation by double-blind steroid withdrawal. : American journal of respiratory and critical care medicine. 19990811.