1. Laboratory of Neurosciences University of Western Brittany Brest France
2. Department of Dermatology University Hospital of Brest Brest France
3. Department of Gastroenterology AP‐HP Hospital Louis Mourier Colombes France
4. Faculty of Medicine Denis Diderot University Paris 7 Paris France
5. EMMA Fontenay‐sous‐Bois France
6. Necker Enfants Malades Hospital Paris France