The Secretary may authorize the Under Secretary for Health to pay advance payments, recruitment or relocation bonuses, and retention allowances to the personnel described in paragraph (1) of section 7401 of this title, or interview expenses to candidates for appointment as such personnel, in the same manner, and subject to the same limitations, as in the case of the authority provided under sections 5524a, 5706b, 5753, and 5754 of title 5.