Section, Pub. L. 91–616, title III, § 301, Dec. 31, 1970, 84 Stat. 1849; Pub. L. 92–554, Oct. 25, 1972, 86 Stat. 1167; Pub. L. 93–282, title I, § 105(a), May 14, 1974, 88 Stat. 127; Pub. L. 94–371, § 3(a), July 26, 1976, 90 Stat. 1035; Pub. L. 96–180, § 7, Jan. 2, 1980, 93 Stat. 1303; Pub. L. 97–35, title IX, § 962(a), Aug. 13, 1981, 95 Stat. 592, which provided for a program of technical assistance to States, was redesignated section 520 of the Public Health Service Act by Pub. L. 98–24, § 2(b)(13), Apr. 26, 1983, 97 Stat. 181, and is classified to section 290dd of this title.