From the Department of Internal Medicine and Radboud Institute for Molecular Life Sciences (R.t.H., I.C.L.v.d.M., K.S., M.J., S.P.S., T.B., H.L., H.D., J.d.G., L.A.B.J., J.H.W.R., M.G.N., N.P.R.), Radboud University Medical Center, Nijmegen, the Netherlands. Department of Genetics, University of Groningen, University Medical Center Groningen, the Netherlands (R.A.-G.). Department for Health Evidence, Radboud Institute for Health Sciences (T.E.G.), Radboud University Medical Center, Nijmegen, the Netherlands. Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston (R.J.X.). Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands (Y.L.). Department of Computational Biology for Individualized Infection Medicine, Centre for Individualized Infection Medicine (CiiM) & TWINCORE, joint ventures between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Germany (Y.L.). Department of Medical Genetics, Iuliu HaĊ£ieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania (L.A.B.J.). Department for Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Germany (M.G.N.).