In all hearings conducted under this Act, information received, pursuant to law, relating to any information acquired by a physician in attending any patient in a professional character, necessary to enable them professionally to serve such patient, shall be deemed strictly confidential and shall only be made available either as part of the record of such hearing or otherwise: (a) when such record is required, in its entirety, for purposes of judicial review pursuant to this Act; or (b) upon the express, written consent of the patient, or in the case of their death or disability, of their personal representative.