1. Department of Dermatology, Cliniques universitaires Saint-Luc, Université catholique de Louvain (UCLouvain), Brussels, Belgium
2. Institute of Experimental and Clinical Research (IREC), Pneumology, ENT and Dermatology Pole (LUNS), Université catholique de Louvain (UCLouvain), Brussels, Belgium
3. Department of Gastroenterology, Cliniques universitaires Saint-Luc, Université catholique de Louvain (UCLouvain), Brussels, Belgium
4. Institute of Experimental and Clinical Research (IREC), Pole of Research in Hepato-Gastroenterology (GAEN), Université catholique de Louvain (UCLouvain), Brussels, Belgium