Section 2901, added Pub. L. 89–793, title I, § 101 , Nov. 8, 1966 , 80 Stat. 1438 ; amended Pub. L. 91–513, title III, § 1102 (l), Oct. 27, 1970 , 84 Stat. 1293 ; Pub. L. 92–420, § 2 , Sept. 16, 1972 , 86 Stat. 677 ; Pub. L. 98–473, title II, § 228(c) , Oct. 12, 1984 , 98 Stat. 2030 , defined terms used in chapter. Section 2902, added Pub. L. 89–793, title I, § 101 , Nov. 8, 1966 , 80 Stat. 1439 , related to discretionary authority of court, examination, report, and determination by court, and termination of civil commitment. Section 2903, added Pub. L. 89–793, title I, § 101 , Nov. 8, 1966 , 80 Stat. 1440 , related to authority and responsibilities of the Surgeon General, institutional custody, aftercare, maximum period of civil commitment, and credit toward sentence. Section 2904, added Pub. L. 89–793, title I, § 101 , Nov. 8, 1966 , 80 Stat. 1441 , related to civil commitment not a conviction and use of test results. Section 2905, added Pub. L. 89–793, title I, § 101 , Nov. 8, 1966 , 80 Stat. 1441 , related to delegation of functions by Surgeon General and use of Federal, State, and private facilities. Section 2906, added Pub. L. 89–793, title I, § 101 , Nov. 8, 1966 , 80 Stat. 1441 , related to absence of offer by the court to a defendant of an election under section 2902(a) or any determination as to civil commitment not being reviewable on appeal or otherwise.