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Verma, S; Siu, SC (May 2014). "Aortic dilatation in patients with bicuspid aortic valve". New England Journal of Medicine (Review). 370 (20): 1920–9. doi:10.1056/NEJMra1207059. PMID24827036.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)