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Pascual-Leone A, Houser CM, Grafman J, Hallett M.Pascual-Leone A, et al. Among authors: hallett m.Lancet. 1992 Jun 6;339(8806):1420. doi: 10.1016/0140-6736(92)91245-4.Lancet. 1992.PMID: 1350834No abstract available.