1. Digestive Disease Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi 112412, United Arab Emirates
2. College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
3. Digestive Disease Institute, Cleveland Clinic, Cleveland, OH 44195, USA
4. Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA