Published on in Vol 21, No 8 (2019): August
1 Centre for Population Health Sciences (CePHaS), Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
2 Norwich & Norwich University Hospital, Colney Lane, Norwich, United Kingdom
3 Health Workforce Department, World Health Organization, Geneva, Switzerland
4 Family Medicine and Primary Care, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
5 Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, United Kingdom