1 Department of Medicine, University of Cape Town, South Africa. Electronic address: [email protected].
2 University College London Medical School and Consultant Hepatologist, Kings College Hospital, London, UK.
3 Internal Medicine, Saint Louis University, St. Louis, Mo, USA.
4 Liver Disease Research Branch, Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA.