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Sperker ER, Spence MW.Sperker ER, et al. Among authors: spence mw.J Neurochem. 1983 Apr;40(4):1182-4. doi: 10.1111/j.1471-4159.1983.tb08112.x.J Neurochem. 1983.PMID: 6300325
Guy NC, Clarke JT, Spence MW, Cook HW.Guy NC, et al. Among authors: spence mw.Brain Res Bull. 1983 May;10(5):603-6. doi: 10.1016/0361-9230(83)90028-x.Brain Res Bull. 1983.PMID: 6307490