Figure 4.

Kaplan- Meier estimates of event-free survival to AF (A) and the composite of valvular surgery or death (B), in combined analysis. Group A (red), Group B (green), Group C (blue) and Group D (orange).

Widgren et al. BMC Cardiovascular Disorders 2012 12:92   doi:10.1186/1471-2261-12-92
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