Any health care facilities and services hospital district shall be deemed a hospital to the same extent as though the same were a hospital which is being operated and maintained as a hospital and shall be controlled, financed, operated, managed and maintained as provided by the general law relating to such hospital immediately prior to the time the hospital became a health care facilities and services hospital district, and shall be subject to the limitations and restrictions provided by such general law. The determination of the number of board members of any existing health care facilities and services hospital district, the method of selection and the terms, qualifications, organization, meetings and compensation thereof shall be as provided by the general law relating to hospital boards under which such hospital was operated and maintained immediately prior to the time the hospital became a health care facilities and services hospital district, and every such board of an existing health care facilities and services hospital district shall have the same powers, duties and functions that are prescribed for boards of hospitals by the law under which such hospital was operated and maintained immediately prior to the time the hospital became a health care facilities and services hospital district.