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Affiliations

• ¹ Gastrointestinal Unit, Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana , University of Salerno, Salerno, Italy. Electronic address: piovino@unisa.it.
• ² Pio Albergo Trivulzio Hospital, Milano, Italy.
• ³ S. Giovanni Addolorata Hospital, Roma, Italy.
• ⁴ Gastrointestinal Unit, Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana , University of Salerno, Salerno, Italy.
• ⁵ 2nd Medical Department, "Iuliu Hatieganu", University of Medicine and Pharmacy, Cluj-Napoca, Romania.
• ⁶ Il Cerchio Med Healthcare, Verona Center, Verona, Italy; Center for Functional GI and Motility Disorders, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.