Hirsch J A, Donovan W D, Barr R M, Nicola G N, Rosman D A, Schaefer P W, Manchikanti L
From the Department of Radiology (J.A.H., D.A.R., P.W.S.), Massachusetts General Hospital, 55 Fruit St, Gray Bldg., 2nd Floor, Boston, Massachusetts
Norwich Diagnostic Imaging Associates (W.D.D.), Norwich, Connecticut.
AJNR Am J Neuroradiol. 2014 Jun;35(6):1066-9. doi: 10.3174/ajnr.A3736. Epub 2013 Oct 17.