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Emergency department diversion: Causes and solutions
Litvak E, Long MC, Cooper A, McManus M. Emergency department diversion: Causes and solutions. Academic Emergency Medicine. 2001;8(11):1108-1110.

An exploration of the two types of variability experienced in the hospital setting, natural variability and artificial variability, and how queuing theory can be used to manage natural variability while artificial variability should be eliminated to improve flow of patients.



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