1. Research Unit of Food Science and Human Nutrition, Department of Science and Technology for Humans and the Environment, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21-00128 Roma, Italy
2. Research Unit of Gastroenterology, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21-00128 Roma, Italy
3. Operative Research Unit of Gastroenterology, Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200-00128 Roma, Italy
4. Department of Gastroenterology and Hepatology, University Hospitals Leuven, 3000 Leuven, Belgium