Sustained-action medication in perennial bronchial asthma.
D001249:Asthma / Q000628:therapy*; D004809:Ephedrine / Q000628:therapy*; D010634:Phenobarbital / Q000628:therapy*; D013806:Theophylline / Q000628:therapy*
D013806:Theophylline; D004809:Ephedrine; D010634:Phenobarbital
ASTHMA/therapy; EPHEDRINE/therapy; PHENOBARBITAL/therapy; THEOPHYLLINE/therapy