1. Medical Collaboration Center, Bach Mai Hospital, Ha Noi, Vietnam
2. Department of Health and Social Sciences, University of the West of England, Bristol, UK
3. Department of Health and Social Sciences, Queen Margaret University, Edinburgh, Scotland
4. Health Systems Research Project, Hanoi Medical University, Ha Noi, Vietnam
5. Division of International Health (IHCAR), Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden