Bernard Branson, MD, Office of the Director, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA

Rosanna W Peeling, BSc, MSc, PhD, Clinical Research Department, Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK, London, United Kingdom

J. Dennis Fortenberry, MD, MS, Department of Pediatrics, Division of Adolescent Medicine, Indiana University School of Medicine, Indianapolis, IN