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. Author manuscript; available in PMC: 2014 Dec 30.
Published in final edited form as: Circulation. 2009 Jan 12;119(3):445–451. doi: 10.1161/CIRCULATIONAHA.108.775221

Figure 2.

Figure 2

Illustration of the follow-up period during which clinical events are recorded, for a single PVR patient/control pair. The follow-up period begins at the date of PVR and continues to the earlier of the two last clinical records.