About the Authors
Division of Biostatistics, Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
Internal Medicine, Yale University, New Haven, Connecticut, United States of America
Center for Statistical Genomics and Proteomics, Department of Epidemiology and Public Health, Yale University, New Haven, Connecticut, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JC HZ. Performed the experiments: JC. Analyzed the data: MC. Wrote the paper: MC HZ.