Nizar N Zein1,2,3. 1. Chair, Global Patient Services, Cleveland Clinic, Cleveland, OH, USA. 2. Mikati Foundation Endowed Chair in Liver Diseases, Department of Gastroenterology and Hepatology; and Transplantation Center, Cleveland Clinic, Cleveland, OH, USA. E-mail: zeinn@ccf.org. 3. Associate Professor, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA.