| Enrolling by invitation | 4 | 148 | Europe | Infliximab, Remicade, Flixabi, Inflectra, Remsima, Zessly, Adalimumab, Humira, AMGEVITA, Hulio, Hyrimoz, Idacio, Imraldi | University Medical Center Groningen, European Crohn´s and Colitis Organisation, Bühlmann Laboratories AG | Inflammatory Bowel Diseases, Crohn Disease, Colitis, Ulcerative | 03/25 | 03/25 | | |