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Stewart WF, Shechter A, Liberman J.Stewart WF, et al.Am J Med. 1992 Jan 24;92(1A):35S-40S. doi: 10.1016/0002-9343(92)90135-x.Am J Med. 1992.PMID: 1734733
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Lipton RB, Stewart WF.Lipton RB, et al. Among authors: stewart wf.Eur Neurol. 1994;34 Suppl 2:6-11. doi: 10.1159/000119525.Eur Neurol. 1994.PMID: 7835383