With respect to a grant under subsection (a) to an applicant for a fiscal year, the applicant shall, of the portion of the grant remaining after reserving amounts for purposes of paragraphs (3) and (5) of section
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(g) of this title, use not less than 75 percent to provide core medical services that are needed in the area involved for individuals with HIV/AIDS who are identified and eligible under this subchapter (including services regarding the co-occurring conditions of the individuals).