This Consensus Study Report was reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise. The purpose of this independent review is to provide candid and critical comments that will assist the National Academies of Sciences, Engineering, and Medicine in making each published report as sound as possible and to ensure that it meets the institutional standards for quality, objectivity, evidence, and responsiveness to the study charge. The review comments and draft manuscript remain confidential to protect the integrity of the deliberative process.

We thank the following individuals for their review of this report:

• AXEL BÖRSCH-SUPAN, Munich Center for the Economics of Aging
• EILEEN M. CRIMMINS, University of Southern California
• SANDRO GALEA, Boston University
• STEPHEN JOHNSTON, Aging2.0
• ROSELINE KIHUMBA, HelpAge International, Africa Regional Office
• GORDON G. LIU, School of Global Health, Peking University
• ARUN MAIRA, Planning Commission of India and Boston Consulting Group, India
• MARTIN MCKEE, London School of Hygiene & Tropical Medicine
• PHILIP O'KEEFE, University of New South Wales
• LUIS MIGUEL GUTIERREZ ROBLEDO, National Institute of Geriatrics, Mexico
• JUTTA TREVIRANUS, University of Toronto
• MARK J. WALPORT, Imperial College Health Partners

Although the reviewers listed above provided many constructive comments and suggestions, they were not asked to endorse the conclusions or recommendations of this report nor did they see the final draft before its release. The review of this report was overseen by JO IVEY BOUFFORD, School of Global Public Health, New York University, and ERIC B. LARSON, Kaiser Permanente Washington. They were responsible for making certain that an independent examination of this report was carried out in accordance with the standards of the National Academies and that all review comments were carefully considered. Responsibility for the final content rests entirely with the authoring commission and the National Academies.