1. https://www.nationalacademies.org/hmd/~/media/Files/Report%20Files/2001/Crossing-the-Quality-Chasm/Quality%20Chasm%202001%20%20report%20brief.pdf (Accesso 30 novembre 2016)
2. https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/266003/newnhs.pdf (Accesso 30 novembre 2016)
3. https://www.oha.com/CurrentIssues/keyinitiatives/PhysicianandProfessionalIssues/QPSGT/Documents/Module%206%20-%206.1.pdf (Accesso 30 novembre 2016)
4. http://www.health.gov.au/internet/nhhrc/publishing.nsf/Content/principles-lp (Accesso 30 novembre 2016)
5. http://www.salute.gov.it/portale/salute/p1_5.jsp?id=21&area=Il_Ssn (Accesso 30 novembre 2016)