RT Journal Article SR Electronic T1 Does the Volume of CSF Removed Affect the Response to a Tap in Normal Pressure Hydrocephalus? JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A5422 A1 Onder, H. A1 Hanalioglu, S. YR 2018 UL http://www.ajnr.org/content/early/2017/12/21/ajnr.A5422.abstract AB