It is time to re-think 'extended criteria'.
Freeman
R B
RB
Klintmalm
G B
GB
D000328:Adult; D006085:Graft Survival; D006801:Humans; D016030:Kidney Transplantation / Q000331:legislation & jurisprudence* / Q000592:standards*; D008875:Middle Aged; D009927:Tissue and Organ Procurement / Q000458:organization & administration*; D014481:United States; D014850:Waiting Lists