Towards universal health coverage: governance and organisational change in ministries of health.

Countries have implemented a range of reforms in health financing and provision to advance towards universal health coverage (UHC). These reforms often change the role of a ministry of health (MOH) in traditionally unitary national health service systems. An exploratory comparative case study of four upper middle-income and high-income countries provides insights into how these reforms in pursuit of UHC are likely to affect health governance and the organisational functioning of an MOH accustomed to controlling the financing and delivery of healthcare.