Regional Variation in the Association Between Advance Directives and End-of-Life Medicare Expenditures

Nicholas, Lauren Hersch; Langa, Kenneth M; Iwashyna, Theodore; Weir, David R. (2011). Regional Variation in the Association Between Advance Directives and End-of-Life Medicare Expenditures. JAMA: The Journal of the American Medical Association. 306(13), 1447-1453.