About the Authors

Jeanne M. McCaffery

dppmail@bsc.gwu.edu

Affiliations The Biostatistics Center, The George Washington University, Rockville, Maryland, United States of America, Weight Control and Diabetes Research Center, The Miriam Hospital and Brown Medical School, Providence, Rhode Island, United States of America

Kathleen A. Jablonski

Affiliation The Biostatistics Center, The George Washington University, Rockville, Maryland, United States of America

Paul W. Franks

Affiliation Department of Genetic and Molecular Epidemiology, Lund University, Malmo, Sweden

Sam Dagogo-Jack

Affiliation Division of Endocrinology, Diabetes and Metabolism, University of Tennessee College of Medicine, Memphis, Tennessee, United States of America

Rena R. Wing

Affiliation Weight Control and Diabetes Research Center, The Miriam Hospital and Brown Medical School, Providence, Rhode Island, United States of America

William C. Knowler

Affiliation Diabetes Epidemiology and Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, Arizona, United States of America

Linda Delahanty

Affiliation Massachusetts General Hospital Diabetes Center, Boston, Massachusetts, United States of America

Dana Dabelea

Affiliation Massachusetts General Hospital Diabetes Center, Boston, Massachusetts, United States of America

Richard Hamman

Affiliation Department of Epidemiology, Colorado School of Public Health, Aurora, Colorado, United States of America

Alan R. Shuldiner

Affiliations Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine, Baltimore, Maryland, United States of America, Geriatrics Research and Education Clinical Center, Veterans Administration Medical Center, Baltimore, Maryland, United States of America

Jose C. Florez

Affiliations Diabetes Research Center Diabetes Unit and Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts, United States of America, Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America, Program in Medical and Population Genetics, Broad Institute, Cambridge, Massachusetts, United States of America

for the Diabetes Prevention Program Research Group

A complete list of centers, investigators, and staff can be found in Text S1.

Competing Interests

Bristol-Myers Squibb and Parke-Davis provided medication; LifeScan Inc., Health O Meter, Hoechst Marion Roussel, Inc., Merck-Medco Managed Care, Inc., Merck and Co., Nike Sports Marketing, Slim Fast Foods Co. and Quaker Oats Co. donated materials, equipment, or medicines for concomitant conditions. McKesson BioServices Corp., Matthews Media Group, Inc., and the Henry M. Jackson Foundation provided support services under subcontract with the Coordinating Center. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JMM JCF. Performed the experiments: JCF. Analyzed the data: JMM KAJ JCF. Wrote the paper: JMM KAJ PWF SD-J RRW WCK LD DD RH ARS JCF.