Section, [act July 1, 1944, ch. 373, title III, § 313], formerly § 309, as added Sept. 8, 1960, [Pub. L. 86–720, § 1(a)], [74 Stat. 819]; amended Aug. 27, 1964, [Pub. L. 88–497, § 3], [78 Stat. 613]; Nov. 3, 1966, [Pub. L. 89–749, § 4], [80 Stat. 1190]; Dec. 5, 1967, [Pub. L. 90–174], §§ 2(g), 8(c), [81 Stat. 534], 540; Aug. 16, 1968, [Pub. L. 90–490, title III, § 302(a)], [82 Stat. 788]; Mar. 12, 1970, [Pub. L. 91–208], §§ 1, 2, [84 Stat. 52]; June 30, 1970, [Pub. L. 91–296, title IV, § 401(b)(1)(B)], [84 Stat. 352]; June 18, 1973, [Pub. L. 93–45, title I, § 104(b)], (c), [87 Stat. 91]; renumbered § 313 and amended July 23, 1974, [Pub. L. 93–353, title I, § 102(c)], [88 Stat. 362]; Oct. 12, 1976, [Pub. L. 94–484, title I, § 101(a)(2)], (3), [90 Stat. 2244], related to graduate public health training grants.