The influence of controlled release theophylline on cold air induced bronchoconstriction in asthma.
D000328:Adult; D001249:Asthma / Q000188:drug therapy*; D001980:Bronchi / Q000187:drug effects* / Q000503:physiopathology; D003080:Cold Temperature / Q000009:adverse effects; D003692:Delayed-Action Preparations; D006801:Humans; D008875:Middle Aged; D012123:Pulmonary Ventilation; D013806:Theophylline / Q000627:therapeutic use*
D003692:Delayed-Action Preparations; D013806:Theophylline