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APA Citation
Lewis, C., Hill, M., Silcock, C., Daley, R., & Chitty, L. (n.d.). non‐invasive prenatal testing for trisomy 21: a cross‐sectional survey of service users' views and likely uptake. BJOG, 121, 582–594. http://access.bl.uk/ark:/81055/vdc_100024779319.0x000061