Collagenous Colitis Mucosa Is Characterized by an Expansion of Nonsuppressive FoxP3+ T Helper Cells. Issue 9 (19th August 2021) - Daferera, Niki; Escudero-Hernández, Celia; Nyström, Sofia; Jenmalm, Maria C; Hjortswang, Henrik; Ignatova, Simone; Ström, Magnus; Münch, Andreas