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.