11. The body has, within the scope of the law, full authority over the conduct of the hearing. It shall, in conducting the proceedings, be flexible and ensure that the substantive law is rendered effective and is carried out.
It shall rule on the admissibility of evidence and means of proof and may, for that purpose, follow the ordinary rules of evidence applicable in civil matters. It shall, however, even of its own initiative, reject any evidence which was obtained under such circumstances that fundamental rights and freedoms are breached and the use of which could bring the administration of justice into disrepute. The use of evidence obtained in violation of the right to professional secrecy is deemed to bring the administration of justice into disrepute.