Festen, E A M; Goyette, P; Scott, R; Annese, V; Zhernakova, A; Lian, J; Lefèbvre, C; Brant, S R; Cho, J H; Silverberg, M S; Taylor, K D; de Jong, D J; Stokkers, P C; Mcgovern, D; Palmieri, O; Achkar, J-P; Xavier, R J; Daly, M J; Duerr, R H; Wijmenga, C