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APA Citation
Petherick, E. S., Pearce, N., Sunyer, J., & Wright, J. (2016). ethnic and socio-economic differences in the prevalence of wheeze, severe wheeze, asthma, eczema and medication usage at 4 years of age: Findings from the Born in Bradford birth cohort. Respiratory medicine, 119, 122–129. http://access.bl.uk/ark:/81055/vdc_100036519181.0x000037