Tricuspid Regurgitation Is Associated With Increased Risk of Mortality in Patients With Low-Flow Low-Gradient Aortic Stenosis and Reduced Ejection Fraction: Results of the Multicenter TOPAS Study (True or Pseudo-Severe Aortic Stenosis). - Dahou A; Magne J; Clavel MA; Capoulade R; Bartko PE; Bergler-Klein J; Sénéchal M; Mundigler G; Burwash I; Ribeiro HB; O'Connor K; Mathieu P; et al. (JACC. Cardiovascular interventions, 2015)