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. 2015 Mar 4;350:h910. doi: 10.1136/bmj.h910

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© Roberts et al 2015

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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graphic file with name robe022337.f4_default.jpg — Fig 4 Results for N terminal probrain natriuretic peptide (separated by threshold) displayed in summary receiver operating characteristic space. Size of symbol indicates study size and solid circles show pooled sensitivity or specificity value according to threshold (for >500 ng/L insufficient data was available to pool results)