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Juniper, E. F., O'Byrne, P. M., Guyatt, G. H., Ferrie, P. J. and King, Derek ORCID: 0000-0002-2408-4558 (1999) Development and validation of a questionnaire to measure asthma control. European Respiratory Journal, 14 (4). pp. 902-907. ISSN 0903-1936