Honap S, St-Pierre J, Colwill M, Patel K, Le Berre C, Caron B, Nogami A, Kobayashi T, Altwegg R, Laharie D, Hebuterne X, Nachury M, Roblin X, Uzzan M, Kotze PG, Lukáš M, Vieujean S, D'Amico F, Albshesh A, Guillo L, Fumery M, Nancey S, Ye BD, Bergemalm D, Halfvarson J, Buisson A, Karmiris K, Rubin DT, Vicaut E, Peyrin-Biroulet L; ATTRACT Study Group