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Jamison RN, Raymond SA, Slawsby EA, Nedeljkovic SS, Katz NP.Jamison RN, et al.Spine (Phila Pa 1976). 1998 Dec 1;23(23):2591-600. doi: 10.1097/00007632-199812010-00014.Spine (Phila Pa 1976). 1998.PMID: 9854758Clinical Trial.