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R03D - OTHER SYSTEMIC DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES
Hierarchy:
R - RESPIRATORY SYSTEM
>
R03 - DRUGS FOR OBSTRUCTIVE AIRWAY DISEASES
Level 4 Subgroups (4)
R03DA - Xanthines
R03DB - Xanthines and adrenergics
R03DC - Leukotriene receptor antagonists
R03DX - Other systemic drugs for obstructive airway diseases