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Heart. Dec 1996; 76(6): 510–512.
PMCID: PMC484604
Welder identity, weld date, and the risk of outlet strut fracture in Björk-Shiley convexo-concave valves: the Dutch cohort study.
M. Kallewaard, A. Algra, and Y. van der Graaf
Department of Clinical Epidemiology, School of Medicine, Utrecht University, The Netherlands.
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