1. NHS England. Five year forward view, 2014.
2. National Quality Board. Shared commitment to quality, 2016.
3. National Academies. Crossing the global quality chasm. Washington DC: National Academies Press, 2018.
4. Grossmann C , Alper J , The Health Foundation. Observational studies in a learning health system: National Academies Press, 2013.
5. Dixon-woods M , McNicol S , Martin G , The Health Foundation. Overcoming challenges to improving quality, 2012.