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. Author manuscript; available in PMC: 2015 Jan 9.
Published in final edited form as: JAMA Surg. 2014 Aug;149(8):821–828. doi: 10.1001/jamasurg.2014.157

Figure 1. Selection of Patient Cohort Undergoing Open Thoracic Aortic Aneurysm (TAA) Repair and Ventral Hernia Repair (VHR).

Figure 1

Data set linkage to determine primary care provider (PCP) utilization shown. HRR indicates hospital referral region; PC, primary care.