Part D of title XXVI of the Public Health Service Act, comprising this part, was originally added to act July 1, 1944, ch. 373, by Pub. L. 101–381, title IV, § 401, Aug. 18, 1990, 104 Stat. 617, and amended by Pub. L. 104–146, May 20, 1996, 110 Stat. 1346; Pub. L. 102–531, Oct. 27, 1992, 106 Stat. 3469; Pub. L. 106–345, Oct. 20, 2000, 114 Stat. 1319; Pub. L. 108–173, Dec. 8, 2003, 117 Stat. 2066. Part D is shown herein, however, as having been added by Pub. L. 109–415, title IV, § 401, Dec. 19, 2006, 120 Stat. 2810, without reference to those intervening amendments because of the extensive revision of part D by Pub. L. 109–415.