AMENDMENTS 1996 - Pub. L. 104-299, Sec. 2, Oct. 11, 1996, 110 Stat. 3626, substituted "Health Centers" for "Primary Health Centers" in subpart heading. 1978 - Pub. L. 95-626, title I, Sec. 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".