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. 2013 Nov 14;100(13):1810–1817. doi: 10.1002/bjs.9318

Fig. 2.

Fig. 2

Funnel plot of risk-adjusted postoperative mortality against total caseload by National Health Service (NHS) Trust from 0 to 90 days (90-day mortality outliers marked). HMU, high-mortality unit; LMU, low-mortality unit