Which one predominates in Ebstein anomaly: tricuspid regurgitation or right ventricular dysfunction?

Which one predominates in Ebstein anomaly: tricuspid regurgitation or right ventricular dysfunction? Ann Thorac Surg. 2019 Oct 03;: Authors: Yurekli I, Kestelli M, Cakir H PMID: 31586622 [PubMed - as supplied by publisher]
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Tags: Ann Thorac Surg Source Type: research