title: Required request: what difference has it made?
authors.affiliation: Center for Biomedical Ethics, University of Minnesota, Minneapolis.
authors.forename: B A
authors.initials: BA
authors.lastname: Virnig
authors.forename: A L
authors.initials: AL
authors.lastname: Caplan
mesh_terms: D001926:Brain Death; D002102:Cadaver; D035082:Federal Government; D006801:Humans; D014019:Tissue Donors / Q000331:legislation & jurisprudence*; D009927:Tissue and Organ Procurement / Q000331:legislation & jurisprudence / Q000639:trends; D014180:Transplantation / Q000331:legislation & jurisprudence*; D014918:Wills / Q000331:legislation & jurisprudence*