Designing Comparative Effectiveness Trials of Surgical Ablation for Atrial Fibrillation: Experience of the Cardiothoracic Surgical Trials Network

. Author manuscript; available in PMC: 2014 Jun 11.

Published in final edited form as: J Thorac Cardiovasc Surg. 2011 May 25;142(2):257–64.e2. doi: 10.1016/j.jtcvs.2011.04.010

Figure 3.