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PART 890 - PHYSICAL MEDICINE DEVICES Authority:21 U.S.C. 351, 360, 360c, 360e, 360j, 360l, 371. Source:48 FR 53047, Nov. 23, 1983, unless otherwise noted. Editorial Note:Nomenclature changes to part 890 appear at 73 FR 35341, June 23, 2008.