1. Gastroenterology UnitDepartment of LifeHealth and Environmental SciencesUniversity of L’AquilaL’AquilaItaly
2. Epidemiology UnitDepartment of LifeHealth and Environmental SciencesUniversity of L’AquilaL’AquilaItaly
3. Pathology UnitS. Salvatore HospitalL’AquilaItaly