Schematic of data flow in a healthcare delivery setting showing the various loci of when permission must be sought and access granted.

FIGURE 8-5Extended XACML access control model/data flow

From: 8, Fostering the Global Dimension of the Health Data Trust

Cover of Digital Infrastructure for the Learning Health System
Digital Infrastructure for the Learning Health System: The Foundation for Continuous Improvement in Health and Health Care: Workshop Series Summary.
Institute of Medicine (US); Grossmann C, Powers B, McGinnis JM, editors.
Washington (DC): National Academies Press (US); 2011.
Copyright © 2011, National Academy of Sciences.

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