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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 ) ) [b38d3f90-5fdb-4fb3-8338-1d884f987d44] => Array ( [runtime-id] => b38d3f90-5fdb-4fb3-8338-1d884f987d44 [type] => toll-free-key [service-id] => ajnr-ac.highwire.org [access-type] => Controlled [privilege] => Array ( [1456c78f-c966-422c-a63c-2851c1d4f0f3] => Array ( [runtime-id] => 1456c78f-c966-422c-a63c-2851c1d4f0f3 [type] => toll-free-key ) ) [credentials] => Array ( [method] => toll-free-key [value] => tf_ipsecsha;485fd8532dcaf6b81856288eddd14fdf39b85338 ) ) ) 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 ) ) [529869e9-f031-49a4-9dab-123610d42168] => Array ( [runtime-id] => 529869e9-f031-49a4-9dab-123610d42168 [type] => toll-free-key [service-id] => ajnr-ac.highwire.org [access-type] => FreeToRead [privilege] => Array ( [4c7b9ba1-ec9b-49b6-ab10-d89efb5e9cfc] => Array ( [runtime-id] => 4c7b9ba1-ec9b-49b6-ab10-d89efb5e9cfc [type] => toll-free-key ) ) [credentials] => Array ( [method] => toll-free-key [value] => tf_ipsecsha;485fd8532dcaf6b81856288eddd14fdf39b85338 ) ) ) RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1205 OP 1205 DO 10.3174/ajnr.A0671 VO 28 IS 7 A1 Layton, K.F. A1 Cloft, H.J. A1 Lindell, E.P. A1 Kallmes, D.F. YR 2007 UL http://www.ajnr.org/content/28/7/1205.3.abstract AB