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De Bruin VS, Machado C, Howard RS, Hirsch NP, Lees AJ.De Bruin VS, et al. Among authors: howard rs.Postgrad Med J. 1996 May;72(847):293-6. doi: 10.1136/pgmj.72.847.293.Postgrad Med J. 1996.PMID: 8761503Free PMC article.
Z'Graggen WJ, Lin CS, Howard RS, Beale RJ, Bostock H.Z'Graggen WJ, et al. Among authors: howard rs.Brain. 2006 Sep;129(Pt 9):2461-70. doi: 10.1093/brain/awl191. Epub 2006 Aug 10.Brain. 2006.PMID: 16901913Free article.
Tai YF, Kullmann DM, Howard RS, Scott GM, Hirsch NP, Revesz T, Leary SM.Tai YF, et al. Among authors: howard rs.J Neurol. 2010 Nov;257(11):1931-3. doi: 10.1007/s00415-010-5629-x. Epub 2010 Jun 22.J Neurol. 2010.PMID: 20567842No abstract available.
Silva MT, Sophar M, Howard RS, Spencer GT.Silva MT, et al. Among authors: howard rs.J Neurol. 1995 Sep;242(9):604-7. doi: 10.1007/BF00868815.J Neurol. 1995.PMID: 8551324