Associate Scientific Director of CAPRISA, Professor in Clinical Epidemiology at Columbia University, Pro-Vice-Chancellor for African Health at University of KwaZulu-Natal, and President of The World Academy of Sciences
James Martin Professorial Fellow in the Oxford Institute of Population Ageing at the University of Oxford, UK, Honorary Professor in the Institute of Ageing in Africa at the University of Cape Town, South Africa, Director of the International Federation of Ageing
Professor of Internal Medicine and Geriatrics; Director of the Department of Medicine, University Hospital of Palermo; Director of the Post-graduate program in Geriatrics, Italy