1. Hepatology Clinic, Department of Medicine University of Zambia Teaching Hospital Lusaka Zambia
2. Department of Medicine, Division of Pulmonary and Critical Care Medicine, Tikur Anbessa Specialized Hospital, College of Health Sciences University of Addis Ababa Addis Ababa Ethiopia
3. Department of Medicine, Butare University Teaching Hospital University of Rwanda Butare Rwanda
4. Department of Medicine University of California San Francisco San Francisco California USA
5. Department of Medicine, Division of Cardiology University of Virginia School of Medicine Charlottesville Virginia USA
6. Department of Epidemiology and Biostatistics University of California San Francisco San Francisco California USA