Consensus for managing acute severe ulcerative colitis in children: A systematic review and joint statement from ECCO, ESPGHAN, and the porto IBD working group of ESPGHAN

Dan Turner^*, Simon P.L. Travis, Anne M. Griffiths, Frank M. Ruemmele, Arie Levine, Eric I. Benchimol, Marla Dubinsky, George Alex, Robert N. Baldassano, Jacob C. Langer, Robert Shamberger, Jeffrey S. Hyams, Salvatore Cucchiara, Athos Bousvaros, Johanna C. Escher, James Markowitz, David C. Wilson, Gert Van Assche, Richard K. Russell