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Gibbons RD, Segawa E, Karabatsos G, Amatya AK, Bhaumik DK, Brown CH, Kapur K, Marcus SM, Hur K, Mann JJ.Gibbons RD, et al. Among authors: karabatsos g.Stat Med. 2008 May 20;27(11):1814-33. doi: 10.1002/sim.3241.Stat Med. 2008.PMID: 18404622Free PMC article.