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. Author manuscript; available in PMC: 2012 May 28.
Published in final edited form as: Thorax. 2010 Nov 20;66(4):352–353. doi: 10.1136/thx.2010.146407

Figure 1.

Figure 1

CUSUM chart of the learning curve of endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) at our centre using an acceptable false-negative rate of 10% and an unacceptable rate of 15%.