If the health care facility has none of the charts or records specified in the subpoena, or only a part thereof, the custodian of the charts or records shall so state in a notarized affidavit and, following notice and payment of expenses, shall hold available the original charts or records which are in the health care facility's custody and specified in the subpoena and shall deliver the certified copies together with the affidavit.
42 Pa.C.S. § 6154