Nonprescription availability of antiasthma drugs.
Rasaiah
B
B
D000328:Adult; D001249:Asthma / Q000188:drug therapy*; D002170:Canada; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D004366:Nonprescription Drugs; D011247:Pregnancy; D012651:Self Medication; D013806:Theophylline / Q000009:adverse effects*
D004366:Nonprescription Drugs; D013806:Theophylline