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APA Citation
Williams, C., Maskell, N., Rees, E., Truman, K., & Ionescu, A. (n.d.). 157 Prevalence of Aortic Valve Abnormalities in the Elderly: A Screening Study Using Hand-Held Ultrasound Scanni. Heart, 102, A113. http://access.bl.uk/ark:/81055/vdc_100135539583.0x000017