Section, act July 1, 1944, ch. 373, title XIII, § 1311, formerly title VII, § 711, as added Feb. 28, 1948, ch. 83, § 9(b),
62 Stat. 47; renumbered title VIII, § 811, July 30, 1956, ch. 779, § 3(b),
70 Stat. 721; renumbered title IX, § 911, Sept. 4, 1964,
Pub. L. 88–581, § 4(b),
78 Stat. 919; renumbered title X, § 1011, Oct. 6, 1965,
Pub. L. 89–239, § 3(b),
79 Stat. 931; renumbered title XI, § 1111, Dec. 24, 1970,
Pub. L. 91–572, § 6(b),
84 Stat. 1506; renumbered title XII, § 1211, May 16, 1972,
Pub. L. 92–294, § 3(b),
86 Stat. 137; renumbered title XIII, § 1311, Nov. 16, 1973,
Pub. L. 93–154, § 2(b)(2),
87 Stat. 604, provided for appointment to higher grades of Public Health Service officers for mental health and hospital construction activities.