14 Humanitas University, Department of Biomedical Sciences, Milan, Italy. tommy.riskala@st.hunimed.eu.
15 Division of Gastroenterology and Digestive Endoscopy, Humanitas Research Hospital - IRCCS, Milan; Humanitas University, Department of Biomedical Sciences, Milan, Italy. cesareh@hotmail.com.
16 Department of Internal Medicine, A. Manzoni Hospital, Lecco, Italy. marco.soncini1@gmail.com.