A comparative study of the effects of an inhaled corticosteroid, budesonide, and a β2-agonist, terbutaline, on airway inflammation in newly diagnosed asthma: a randomized, double-blind, parallel-group controlled trial. - Laitinen,L.A.; Laitinen,A.; Haahtela,T. (J. Allergy Clin. Immunol., 1992)