About the Authors

Stephen G. Jones


Affiliation Department of Medical Informatics, BlueCross BlueShield of Tennessee, Chattanooga, Tennessee, United States of America

Martin Kulldorff

Affiliation Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist. SJ (corresponding author) was employed by BlueCross BlueShield of Tennessee at the time this study was conducted but no funding was received or pursued, only in-kind services (time allowance) were provided. 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: SJ MK. Performed the experiments: SJ. Analyzed the data: SJ. Contributed reagents/materials/analysis tools: SJ MK. Wrote the paper: SJ MK.