1. Department of Anthropology; University of Oregon; Eugene Oregon 97403
2. Center for Equity Promotion, College of Education; University of Oregon; Eugene Oregon 97403
3. School of Medicine; University of Wollongong; Wollongong New South Wales 2522 Australia
4. Illawarra Health and Medical Research Institute; Wollongong New South Wales 2522 Australia
5. Department of Development Studies; International Institute for Population Sciences; Mumbai 400088 India
6. Study on global AGEing and adult health (SAGE); World Health Organization; Geneva 1211 Switzerland
7. Research Centre for Generational Health and Ageing, University of Newcastle; Newcastle New South Wales 2308 Australia