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APA Citation
Newcombe, P. A., Sheffield, J. K., Juniper, E. F., Petsky, H. L., Willis, C., & Chang, A. B. (2010). validation of a parent-proxy quality of life questionnaire for paediatric chronic cough (PC-QOL). Thorax, 65(9), 819–823. http://access.bl.uk/ark:/81055/vdc_100137791402.0x000028