The use of prophylactic drugs for asthma in general practice.
D000281:Administration, Intranasal; D000293:Adolescent; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage / Q000627:therapeutic use; D000328:Adult; D000336:Aerosols; D000368:Aged; D001249:Asthma / Q000188:drug therapy*; D004205:Cromolyn Sodium / Q000008:administration & dosage / Q000627:therapeutic use; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
D000305:Adrenal Cortex Hormones; D000336:Aerosols; D004205:Cromolyn Sodium