1 Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong siewchienng@cuhk.edu.hk herbert.tilg@i-med.ac.at.
2 Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism, Medical University Innsbruck, Innsbruck, Austria siewchienng@cuhk.edu.hk herbert.tilg@i-med.ac.at.