Editorial Notes Codification Section 283h, act July 1, 1944, ch. 373, title IV, § 404F, as added Pub. L. 107–280, § 3 , Nov. 6, 2002 , 116 Stat. 1989 ; amended Pub. L. 109–482, title I , §§ 103(b)(5), 104(b)(1)(B), Jan. 15, 2007 , 120 Stat. 3687 , 3693, which related to the Office of Rare Diseases, was renumbered section 481 of act July 1, 1944 , by Pub. L. 112–74, div. F, title II, § 221(c)(2)(A)(i) , Dec. 23, 2011 , 125 Stat. 1089 , and transferred to section 287a–1 of this title . Section 283i, act July 1, 1944, ch. 373, title IV, § 404G, as added Pub. L. 107–280, § 4 , Nov. 6, 2002 , 116 Stat. 1990 ; amended Pub. L. 109–482, title I, § 103(b)(6) , Jan. 15, 2007 , 120 Stat. 3687 , which related to rare disease regional centers of excellence, was renumbered section 481A of act July 1, 1944 , by Pub. L. 112–74, div. F, title II, § 221(c)(3) , Dec. 23, 2011 , 125 Stat. 1089 , and transferred to section 287a–2 of this title .