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Array ( [urn:ac.highwire.org:guest:identity] => Array ( [runtime-id] => urn:ac.highwire.org:guest:identity [type] => guest [service-id] => ajnr-ac.highwire.org [access-type] => Controlled [privilege] => Array ( [urn:ac.highwire.org:guest:privilege] => Array ( [runtime-id] => urn:ac.highwire.org:guest:privilege [type] => privilege-set [privilege-set] => GUEST ) ) [credentials] => Array ( [method] => guest ) ) [3ac89fe6-5eaf-48d0-9325-17dc2282a450] => Array ( [runtime-id] => 3ac89fe6-5eaf-48d0-9325-17dc2282a450 [type] => toll-free-key [service-id] => ajnr-ac.highwire.org [access-type] => Controlled [privilege] => Array ( [00f4ecb7-a238-43ba-9f17-5893421f17f4] => Array ( [runtime-id] => 00f4ecb7-a238-43ba-9f17-5893421f17f4 [type] => toll-free-key ) ) [credentials] => Array ( [method] => toll-free-key [value] => tf_ipsecsha;9f300b325800ccc6f5f0d444cf2d1d01e84715a4 ) ) ) 1naresh2nareshArray ( [urn:ac.highwire.org:guest:identity] => Array ( [runtime-id] => urn:ac.highwire.org:guest:identity [type] => guest [service-id] => ajnr-ac.highwire.org [access-type] => FreeToRead [privilege] => Array ( [urn:ac.highwire.org:guest:privilege] => Array ( [runtime-id] => urn:ac.highwire.org:guest:privilege [type] => privilege-set [privilege-set] => GUEST ) ) [credentials] => Array ( [method] => guest ) ) [27103f72-fd87-4dbd-ac25-5e4b11859e7a] => Array ( [runtime-id] => 27103f72-fd87-4dbd-ac25-5e4b11859e7a [type] => toll-free-key [service-id] => ajnr-ac.highwire.org [access-type] => FreeToRead [privilege] => Array ( [c61a0dad-8df5-4a42-8a13-c081c12ac738] => Array ( [runtime-id] => c61a0dad-8df5-4a42-8a13-c081c12ac738 [type] => toll-free-key ) ) [credentials] => Array ( [method] => toll-free-key [value] => tf_ipsecsha;9f300b325800ccc6f5f0d444cf2d1d01e84715a4 ) ) ) RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E83 OP E83 DO 10.3174/ajnr.A2229 VO 31 IS 9 A1 Miller, N.G. A1 Reddick, W.E. A1 Kocak, M. A1 Glass, J.O. A1 Löbel, U. A1 Morris, B. A1 Gajjar, A. A1 Patay, Z. YR 2010 UL http://www.ajnr.org/content/31/9/E83.abstract AB