The main purpose of the reference centre is to improve the treatment of rare diseases. To achieve this, the reference centre works with teams of clinicians throughout the country wishing to be involved in improvements to the treatment of these diseases. As far as the rare vascular diseases linked to CERVCO are concerned, we would like all patients in each of the main French regions to be able to contact doctors who are well-acquainted with the disease and who work with the reference centre to improve treatment . With this aim in mind, CERVCO is gradually setting up a network with expertise in diagnosis and treatment. The list of medical experts in the network will be gradually made available to professionals, patients and their families on this page.