Author Affiliations: Division of Pulmonary, Allergy, and Critical Care Medicine (Dr Halpern), Department of Medical Ethics and Health Policy (Drs Halpern and Emanuel), Leonard Davis Institute of Health Economics (Drs Halpern and Emanuel), and Center for Clinical Epidemiology and Biostatistics (Dr Halpern), Perelman School of Medicine, and Department of Healthcare Management, Wharton School (Dr Emanuel), University of Pennsylvania, Philadelphia.
Halpern SD, Emanuel EJ. Advance Directives and Cost SavingsGreater Clarity and Perpetual Confusion. Arch Intern Med. 2012;172(3):266–268. doi:10.1001/archinternmed.2011.1399
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