2014—Par. (4). Pub. L. 113–152 amended par. (4) generally. Prior to amendment, text read as follows: “The term ‘trauma’ means an injury resulting from exposure to a mechanical force.”

1993—Par. (3). Pub. L. 103–183 substituted “Puerto Rico,” for “Puerto Rico;”.

1992—Pub. L. 102–321 substituted “this part and parts A and B” for “this subchapter” in introductory provisions.

Amendment by Pub. L. 102–321 effective July 10, 1992, with provision for programs providing financial assistance, see section 801(b), (d) of Pub. L. 102–321, set out as a note under section 236 of this title.