1. Brookdale Center for Healthy Aging at Hunter College, The City University of New York, New York , NY, USA
2. School of Health and Society, University of Wollongong, Wollongong , NSW, Australia
3. School of Social Justice, Queensland University of Technology, Brisbane , QLD, Australia
4. London School of Hygiene and Tropical Medicine , London, UK
5. Medical Research Council/Uganda Virus Research , Entebbe, Uganda