| http://www.w3.org/ns/prov#value | - tate to state, and institution to institution.9,11 The only federal requirement for researchers is that PWD should have a LAR available to sign informed consent before participating in any research study.25 LARs are referred to by many terms in the literature (e.g. research surrogate, proxy, substitute decision makers) and are people such as family members, close friends, or a legally appointed gu
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