This report has been reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise, in accordance with procedures approved by the National Research Council’s Report Review Committee. The purpose of this independent review is to provide candid and critical comments that will assist the institution in making its published report as sound as possible and to ensure that the report meets institutional standards for 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 wish to thank the following individuals for their review of this report:

Caroline Baier-Anderson, Environmental Defense Fund

Brad Black, Center for Asbestos Related Disease

Peter Buseck, Arizona State University

David C. Christiani, Harvard School of Public Health

John Dement, Duke University

Mickey Gunter, University of Idaho

John G. Hadley, Owens Corning

Bob Hamilton, Parker, Colorado

S. Katharine Hammond, University of California, Berkeley

Thomas Mathew, University of Maryland, Baltimore County

Roger O. McClellan, Toxicology and Human Health Risk Analysis

Brooke Mossman, University of Vermont

Gunter Oberdorster, University of Rochester School of Medicine and Dentistry

Laura Welch, CPWR—The Center for Construction Research and Training

Haining Yang, John A. Burns School of Medicine, University of Hawaii

Although the reviewers listed above have provided many constructive comments and suggestions, they were not asked to endorse the conclusions or recommendations, nor did they see the final draft of the report before its release. The review of this report was overseen by Lonnie Bristow, Consultant, Walnut Creek, California, and John C. Bailar III, The University of Chicago, (emeritus). Appointed by the National Research Council and Institute of Medicine, they were responsible for making certain that an independent examination of this report was carried out in accordance with institutional procedures and that all review comments were carefully considered. Responsibility for the final content of this report rests entirely with the authoring committee and the institution.