... JF Johanson, Rockford Gastroenterology Associates, Rockford, Ill.; PW Jørgensen, Bispebjerg Hospital ... Y. Niv, Rabin Medical Center, Petah Tikva, Israel; PM Pardoll, S. Scheinert, Center ... Chicago; P. Vergauwe, Algemeen Ziekenhuis Groeninge, Kortrijk, Belgium; B. Vergeau, C ...