1. The global health system: Strengthening national health systems as the next step for global progress;J Frenk,2010
2. Building the field of health policy and systems research: An agenda for action;S Bennett,2011
3. From the ground up: strengthening health systems at district level;MT Bassett,2013
4. Implementation research to catalyze advances in health systems strengthening in sub-Saharan Africa: the African Health Initiative;K Sherr,2013
5. The emergence of global attention to health systems strengthening;T Hafner,2013