Section, act July 1, 1944, ch. 373, title XI, 1131, as added July 29, 1975, Pub. L. 94–63, title VI, § 606, 89 Stat. 350; amended Aug. 1, 1977, Pub. L. 95–83, title III, § 306(b), 91 Stat. 389; Nov. 10, 1978, Pub. L. 95–626, title II, § 206(a), 92 Stat. 3584; Aug. 13, 1981, Pub. L. 97–35, title XXI, § 2193(a)(1)(D), 95 Stat. 827, related to comprehensive hemophilia diagnostic and treatment centers.