1. Independent Researcher, Los Angeles, California, USA
2. Department of Epidemiology and Biostatistics, Imperial College London, London, UK
3. Department of Nutrition and Food Safety, World Health Organization, Geneva, Switzerland
4. Department of Statistics, University of California, Berkeley, California, USA
5. GroundWork, Fläsch, Switzerland
6. The DHS Program, ICF International, Rockville, Maryland, USA