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de Groot, Joris A H; Bossuyt, Patrick M M; Reitsma, Johannes B; Rutjes, Anne W S; Dendukuri, Nandini; Janssen, Kristel J M; Moons, Karel G M (2011). Verification problems in diagnostic accuracy studies: consequences and solutions. BMJ, 343, d4770. London: BMJ Publishing Group 10.1136/bmj.d4770
