WHO Collaborating Centre for Viral Hepatitis, Doherty Institute, The University of Melbourne

University of Michigan

University of Pennsylvania

CUNY Graduate School of Public Health and Health Policy (CUNY SPH)

Jawaharlal Institute of Postgraduate Medical Education and Research

Professor of Medicine, Erasmus MC, Rotterdam, Netherlands

Professor of Medicine; Johns Hopkins University School of Medicine

Massachusetts General Hospital

Henry Ford Health System, Henry Ford Hospital

National and Kapodistrian University of Athens, Medical School