About the Authors

Arash Hossein-nezhad

Affiliation Department of Medicine, Section of Endocrinology, Nutrition, and Diabetes, Vitamin D, Skin and Bone Research Laboratory, Boston University Medical Center, Boston, Massachusetts, United States of America

Avrum Spira

Affiliation Department of Medicine, Section of Computational Biomedicine, Boston University Medical Center, Boston, Massachusetts, United States of America

Michael F. Holick

mfholick@bu.edu

Affiliation Department of Medicine, Section of Endocrinology, Nutrition, and Diabetes, Vitamin D, Skin and Bone Research Laboratory, Boston University Medical Center, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AH MFH AS. Performed the experiments: AH MFH AS. Analyzed the data: AH MFH AS. Contributed reagents/materials/analysis tools: AH MFH AS. Wrote the paper: AH MFH AS.