Long term effects of inhaled corticosteroids in chronic obstructive pulmonary disease: a meta-analysis
P M van Grunsven, C P van Schayck, J P Derenne, H A M Kerstjens, T E J Renkema, D S Postma, T Similowski, R P Akkermans, P C M Pasker-de Jong, P N R Dekhuijzen, C L A van Herwaarden, C van Weel
Thorax Jan 1999, 54 (1) 7-14; DOI: 10.1136/thx.54.1.7