Development of an index to define overall disease severity in IBD

Siegel, Ca; Whitman, Cb; Spiegel, Bmr; Feagan, B; Sands, B; Loftus, Ev; Panaccione, R; D'Haens, G; Bernstein, Cn; Gearry, R; Ng, Sc; Mantzaris, Gj; Sartor, B; Silverberg, Ms; Riddell, R; Koutroubakis, Ie; O'Morain, C; Lakatos, Pl; Mcgovern, Dpb; Halfvarson, J; Reinisch, W; Rogler, G; Kruis, W; Tysk, C; Schreiber, S; Danese, S; Sandborn, W; Griffiths, A; Moum, B; Gasche, C; Pallone, F; Travis, S; Panes, J; Colombel, Jf; Hanauer, S; Peyrin-Biroulet, L