1. Economics Department and Duke Global Health Institute, Duke University, Durham, NC, USA
2. David Geffen School of Medicine, University of California, Los Angeles, CA, USA
3. Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
4. Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
5. Department of Clinical Pathology and Laboratory Medicine, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
6. SurveyMETER, Yogyakarta, Indonesia
7. Sociology Department and Carolina Population Center, University of North Carolina, Chapel Hill, NC, USA