IgG4 subclass and gamma-glutamyl transferase in children with ulcerative colitis with primary sclerosing cholangitis and without sclerosing cholangitis - Farahmand, Fatemeh; Ahmadi, Mitra; Khodadad, Ahmad; Najafi, Mehri; Fallahi, Gholamhossein; Motamed, Farzaneh; Movahedi, Masoud; Aghamohammadi, Asghar; Rezaei, Nima; Javaherizadeh, Hazhir (Clinical and Experimental Hepatology, 2019)