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Whiting, Penny F; Rutjes, Anne W S; Westwood, Marie E; Mallett, Susan; Deeks, Jonathan J; Reitsma, Johannes B; Leeflang, Mariska M G; Sterne, Jonathan A C; Bossuyt, Patrick M M (2011). QUADAS-2: a revised tool for the quality assessment of diagnostic accuracy studies. Annals of internal medicine, 155(8), pp. 529-536. Philadelphia, Pa.: American College of Physicians 10.1059/0003-4819-155-8-201110180-00009
