About the Authors

Gregory C. Shearer

Affiliation Sanford Research/USD: Cardiovascular Health Research Center, Sioux Falls, South Dakota, United States of America

James V. Pottala

Affiliation Sanford Research/USD: Cardiovascular Health Research Center, Sioux Falls, South Dakota, United States of America

John A. Spertus

Affiliation Mid America Heart Institute of Saint Luke's Hospital and the University of Missouri Kansas City, Kansas City, Missouri, United States of America

William S. Harris

harrisw@sanfordhealth.org

Affiliation Sanford Research/USD: Cardiovascular Health Research Center, Sioux Falls, South Dakota, United States of America

Competing Interests

Dr. Shearer has received compensation for consultation with Reliant Pharmaceuticals (now Glaxo Smith-Kline). Dr. Harris has received honoraria for speakerships with Glaxo Smith-Kline.

Author Contributions

Conceived and designed the experiments: GS JP WSH. Performed the experiments: JAS. Analyzed the data: GS JP. Contributed reagents/materials/analysis tools: JAS WSH. Wrote the paper: GS JP WSH.