1. Department of Gastroenterology, Endoscopy and Hepatology, ReMay Consultancy & Medical Services, Ikeja, Lagos State, Nigeria,
2. Department of Interventional Radiology, IRDOC Interventional Radiology Consulting Limited, Euracare Multispecialty Hospital, Victoria Island, Lagos State, Nigeria,
3. Department of Radiology, Harbor-UCLA Medical Center, Los Angeles, California, United States,
4. Department of Gastroenterology and Hepatology, Internal Medicine, University of Calabar Teaching Hospital, Calabar, Cross River, Nigeria,