1. Oxford Martin School, University of Oxford, Oxford, OX1 3BD, UK
2. Oxford India Centre for Sustainable Development, Somerville College, University of Oxford, Oxford, OX2 6HD, UK
3. Oxford Department of International Development, University of Oxford, Oxford, OX1 3TB, UK
4. JSS Institute of Naturopathy and Yogic Sciences, Coimbatore, Tamil Nadu 641105, India
5. South India Aids Action programme, Chennai, Tamil Nadu, 600041, India
6. Stanford University Medical School, Stanford, CA, 94305, USA
7. East of England and Midlands, Public Health England, Nottingham, NG2 4UU, UK
8. Tamil Nadu Ministry of Health, Chennai, Tamil Nadu, 600 009, India