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APA Citation
Venables, K. M., Farrer, N., Sharp, L., Graneek, B. J., & Newman Taylor, A. J. (1993). respiratory symptoms questionnaire for asthma epidemiology: validity and reproducibility.. Thorax, 48(3), 214–219. http://access.bl.uk/ark:/81055/vdc_100135543472.0x000034