With the exception of aortic valve regurgitation, the relative risk increased with increasing severity of the regurgitation and there was a significant trend for mitral, tricuspid and pulmonary regurgitation ( table 4 ).
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With the exception of aortic valve regurgitation, the relative risk increased with increasing severity of the regurgitation and there was a significant trend for mitral, tricuspid and pulmonary regurgitation ( table 4 ).