1. Ohno T, Bodek N. Toyota production system: beyond large scale production. New York: Productivity Press; 1988.
2. Deming WE. The new economics. 2nd ed. Cambridge: Center for Advanced Educational Services, MIT; 1994.
3. Holden RJ. Lean thinking in emergency departments: a critical review. Ann Emerg Med. 2011;57:265–78.
4. Womack JP, Jones DT, Roos D. The machine that changed the world. New York: Free Press; 2007.
5. Jones D, Mitchell A. Lean thinking for the NHS. London: NHS Confederation; 2006.