About the Authors

John T. Schousboe

To whom correspondence should be addressed. E-mail: john.schousboe@parknicollet.com

Affiliations Park Nicollet Health Services, Minneapolis, Minnesota, United States of America, Division of Health Policy and Management, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America

Kevin E. Wilson

Affiliation Hologic, Bedford, Massachusetts, United States of America

Thomas N. Hangartner

Affiliation BioMedical Imaging Laboratory, Wright State University and Miami Valley Hospital, Dayton, Ohio, United States of America

Competing Interests

Dr.'s Schousboe and Hangartner receive research grant support from Hologic, Inc., a manufactuer of bone densitometers.

Author Contributions

Conceived and designed the experiments: JS KW TH. Performed the experiments: JS TH. Analyzed the data: JS. Wrote the paper: JS TH. Other: Contributed to editing the manuscript: KW. Oversaw aquisition of both densitmetric lateral spine (VFA) images and lateral digital spine radiographs: TH. Scored densitometric lateral spine (VFA) images and digital spine radiographs for abdominal aortic calcification: JS.