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:

• PIERRE BARKER, Institute for Healthcare Improvement
• CHRIS BEYRER, Johns Hopkins University
• ANASTASIA TZAVARAS CATSAMBAS, EnCompass LLC
• DAVID CELENTANO, Johns Hopkins University
• PAUL DE LAY, Joint United Nations Programme on HIV/AIDS
• WAFAA M. EL-SADR, Columbia University
• KURT FIRNHABER, Right to Care
• MITCHELL H. GAIL, National Institutes of Health
• ROBERT GROSS, University of Pennsylvania
• JOHN E. LANGE, Bill & Melinda Gates Foundation
• CHEWE LUO, United Nations Children's Fund
• JONATHON LEE SIMON, Boston University
• RJ SIMONDS, Elizabeth Glaser Pediatric AIDS Foundation
• SHOSHANNA SOFAER, City University of New York
• MIRIAM WERE, University of Nairobi

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 Kristine M. Gebbie, Flinders University School of Nursing and Midwifery, and Ann M. Arvin, Stanford University. 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.