Roorda, R.J.

treatment salmeterol study group fev 1 asthma beclomethasone patient children period inhaled airway symptom effect airway responsiveness difference inhaled corticosteroid salbutamol methacholine salmeterol group pd 20 methacholine hospital measurement beclomethasone group figure function responsiveness inhaled corticosteroids lung function measurements respir treatment period growth value inhalation change treatment groups kerrebijn beta -2-agonist asthmatic pd 20 corticosteroid number evening corticosteroids morning verberne improvement run-in period -2-agonist height comparison evening pef result visit childhood exacerbation care medicine vol level 0.8 mg salbutamol analysis airway caliber baseline van essen-zandvliet reduction run-in salmeterol treatment increase asthmatic children roorda course rescue salbutamol center method medicine postbronchodilator clinic study period thorax data monitoring committee follow-up