1996—
Pub. L. 104–299, § 2, Oct. 11, 1996,
110 Stat. 3626, substituted “Health Centers” for “Primary Health Centers” in subpart heading.
1978—
Pub. L. 95–626, title I, § 113(a)(3), Nov. 10, 1978,
92 Stat. 3562, added heading “Part D—Primary Health Care” and, immediately under it, heading “Subpart I—Primary Health Centers”.