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Osaka, 2011, pp. 22\u201348 (Japanese)."},{"key":"2","doi-asserted-by":"crossref","unstructured":"2) Ishikawa M, Hashimoto M, Kuwana N, et al.: Guidelines for management of idiopathic normal pressure hydrocephalus. <i>Neurol Med Chir<\/i> (<i>Tokyo<\/i>) 48 Suppl: S1\u2013S23, 2008","DOI":"10.2176\/nmc.48.S1"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3) Takeuchi T, Fukushima S, Misaki D, Shibata S: Lumbosubarachnoid-lumboepidural shunting in patients with idiopathic normal pressure hydrocephalus; surgical procedures and follow-up study of five cases. <i>Neurol Med Chir<\/i> (<i>Tokyo<\/i>) 53: 638\u2013643, 2013","DOI":"10.2176\/nmc.tn2012-0366"},{"key":"4","unstructured":"4) Takeuchi T, Kasahara E, Misaki D, et al.: Lumbosebarachnoid-Lumboepidural (L-L) shunting in patients with idiopathic normal pressure hydrocephalus under local anesthesia (Part 2)-devise of surgical procedures and decision of initial set-up pressure. <i>Current Pract Neurosurg<\/i> 25: 656\u2013663, 2015 (Japanese)"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5) Hashimoto M, Ishikawa M, More E, Kuwana N; 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