, to remain available until September 30, 2022, for supplements to existing payments under subsections 340E(a) and (h)(1) notwithstanding the cap imposed by subsection (h)(1) and notwithstanding subsection (h)(6), for Children’s Hospitals Graduate Medical Education, to prevent, prepare for, and respond to coronavirus, domestically or internationally: Provided further , That $5,000,000 of the funds appropriated under this paragraph in this Act shall be transferred to Health Resources and Services Administration—Health Care Systems , to remain available until September 30, 2022, for activities under sections 1271 and 1273 of the this Act to improve the capacity of poison control centers to respond to increased calls: Provided further , That of the amount appropriated under this paragraph in this Act, $225,000,000 shall be for grants or other mechanisms, to rural health clinics as defined in section 1861(aa)(2) of the Social Security Act ( 42 U.S.C. 1395x(aa)(2) ) with such funds also available to such entities for building or construction of temporary structures, leasing of properties, and retrofitting facilities as necessary to support COVID–19 testing: Provided further , That such funds shall be distributed using the procedures developed for the Provider Relief Fund authorized under the third paragraph under this heading in division B of the Coronavirus Aid, Relief, and Economic Security Act ( Public Law 116–136 )