1992—Pub. L. 102–405 substituted “Under Secretary for Health” for “Chief Medical Director”.

1991—Pub. L. 102–40, § 401(a)(4)(A), renumbered section 4131 of this title as this section.

Pub. L. 102–40, § 403(a)(1), substituted “Secretary” for “Administrator”.

Pub. L. 102–40, § 402(d)(1), substituted “7334” for “4134”.

Subchapter effective Oct. 21, 1976, see section 211 of Pub. L. 94–581, set out as an Effective Date of 1976 Amendment note under section 111 of this title.