Correct use of aerosol inhalers.
D000335:Aerosol Propellants; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy; D006801:Humans; D012138:Respiratory Therapy / Q000379:methods*; D012646:Self Administration
D000335:Aerosol Propellants; D000336:Aerosols