About the Authors

Xiang Xu

Affiliation Department of Medicine, University of California at San Francisco, San Francisco, California, United States of America

John R. Greenland

Affiliations Department of Medicine, University of California at San Francisco, San Francisco, California, United States of America, Veterans Affairs Medical Center, San Francisco, California, United States of America

Jeffrey E. Gotts

Affiliations Department of Medicine, University of California at San Francisco, San Francisco, California, United States of America, Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California, United States of America

Michael A. Matthay

Affiliations Department of Medicine, University of California at San Francisco, San Francisco, California, United States of America, Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California, United States of America

George H. Caughey

george.caughey@ucsf.edu

Affiliations Department of Medicine, University of California at San Francisco, San Francisco, California, United States of America, Veterans Affairs Medical Center, San Francisco, California, United States of America, Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: XX JRG JEG GHC. Formal analysis: XX JRG GHC. Funding acquisition: GHC. Investigation: XX JRG. Methodology: XX JRG JEG GHC. Project administration: GHC. Resources: JEG MAM. Supervision: MAM GHC. Validation: XX JRG JEG. Visualization: XX JRG GHC. Writing – original draft: XX GHC. Writing – review & editing: XX JRG JEG MAM GHC.