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Abo-Zaid, Ghada, Boliang Guo, Jonathan J. Deeks, Thomas P.A Debray, Ewout W. Steyerberg, Karel G.M Moons, and Richard David Riley. Individual Participant Data Meta-analyses Should Not Ignore Clustering. Elsevier, 2013.

Abo-Zaid, Ghada, et al. Individual Participant Data Meta-analyses Should Not Ignore Clustering. Elsevier, 2013.