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Cha S, Pierce S, Knopp EA, Johnson G, Yang C, Ton A, Litt AW, Zagzag D.Cha S, et al. Among authors: litt aw.AJNR Am J Neuroradiol. 2001 Jun-Jul;22(6):1109-16.AJNR Am J Neuroradiol. 2001.PMID: 11415906Free PMC article.
Law M, Cha S, Knopp EA, Johnson G, Arnett J, Litt AW.Law M, et al. Among authors: litt aw.Radiology. 2002 Mar;222(3):715-21. doi: 10.1148/radiol.2223010558.Radiology. 2002.PMID: 11867790
Cha S, Knopp EA, Johnson G, Wetzel SG, Litt AW, Zagzag D.Cha S, et al. Among authors: litt aw.Radiology. 2002 Apr;223(1):11-29. doi: 10.1148/radiol.2231010594.Radiology. 2002.PMID: 11930044Review.
Cha S, Knopp EA, Johnson G, Litt A, Glass J, Gruber ML, Lu S, Zagzag D.Cha S, et al.AJNR Am J Neuroradiol. 2000 May;21(5):881-90.AJNR Am J Neuroradiol. 2000.PMID: 10815664Free PMC article.