1. Vanke School of Public Health, Tsinghua University , No. 30 Shuangqing Road, Beijing 100084, China
2. Institute for International and Area Studies, Tsinghua University , No. 30 Shuangqing Road, Beijing 100084, China
3. NDM Centre for Global Health Research, Nuffield Department of Medicine, University of Oxford , South Parks Road, Oxford OX1 3SY, UK
4. School of Natural Sciences and Medicine, Ilia State University , Kakutsa Cholokashvili Ave 3/5, Tbilisi 0162, Georgia
5. Medecins Du Monde (France) South Caucasus Regional Program , 3 Elene Akhvlediani Khevi, Tbilisi 0102, Georgia
6. Duke Global Health Institute, Duke University , 310 Trent Drive, Durham, NC 27708, United States of America