Department of Internal Medicine and GastroenterologyPoliclinico S.Orsola;
University of Bologna;
Bologna;
Italy;
Laboratory of ImmunogeneticsVU University Medical Center;
Amsterdam;
The Netherlands;
Institute of Histology and General EmbryologyUniversity of Bologna;
Bologna;
Italy;
Department of Immunohaematology and Blood TransfusionPoliclinico S.Orsola;
University of Bologna;
Bologna;
Italy;
Department of Surgery and Organ TransplantationPoliclinic S.Orsola;
University of Bologna;
Bologna;
Italy;
Laboratory of ImmunogeneticsVU University Medical Center;
Amsterdam;
The Netherlands Laboratory of Immunogenetics and Department of Gastroenterology;
VU University Medical Center;
Amsterdam;
The Netherlands;