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3. Misuse of corticosteroid metered-dose inhaler is associated with decreased asthma stability;Giraud;Eur Respir J,2002
4. Asthma patients’ inability to use a pressurised metered-dose inhaler (pMDI) correctly correlates with poor asthma control as defined by the Global Initiative for Asthma (GINA) strategy: a retrospective analysis;Levy;Prim Care Respir J,2013
5. Misuse of inhaled bronchodilator agents;Saunders;Br Med J,1965