1. Burnet FM. Natural History of Infectious Disease. Cambridge: Cambridge University Press; 1962.
2. Alliance for Health Policy and Systems Research. World Report on Health Policy and Systems Research. Geneva: WHO; 2017.
3. Gilson L, editor. Health Policy and Systems Research: A Methodology Reader. Geneva: Alliance for Health Policy and Systems Research, World Health Organization; 2012.
4. Peters DH. The application of systems thinking in health: why use systems thinking? Health Res Policy Syst. 2014;12:51.
5. World Health Organization. Everybody Business: Strengthening Health Systems to Improve Health Outcomes - WHO’s Framework for Action. Geneva: WHO; 2007.