1. Department of Internal Medicine, University of Jos, Jos, Plateau, Nigeria
2. Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
3. Faculty of Commerce, Law and Management, University of the Witwatersrand, Johannesburg, South Africa
4. Division of Hepatology, Department of Medicine, University of Cape Town, Rondebosch, Western Cape, South Africa