About the Authors

Mukesh G Harisinghani

Affiliation Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America

Ralph Weissleder

To whom correspondence should be addressed. E-mail: weissleder@helix.mgh.harvard.edu

Affiliation Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist. RW is a member of the editorial board of PLoS Medicine.

Author Contributions

MGH conducted the study, analyzed the data, and enrolled patients. RW designed and conducted the study and analyzed the data. RW and MGH contributed to writing the paper.