Subject to Articles L. 4163-18 to L. 4163-20, disputes relating to decisions taken by the managing body pursuant to Sections 2 and 3 of this Chapter and to this Section 4 shall be settled in accordance with the provisions governing social security litigation. Disputes relating to the declaration referred to in Article L. 4163-1 may not be the subject of a dispute separate from that referred to in this Article. Notwithstandingarticle L. 144-5 of the Social Security Code, the costs of expert reports requested by the courts in the context of this litigation shall be borne by the national bodies of the accidents at work and occupational diseases branch, in accordance with the procedures laid down by decree.