About the Authors
Stanford Prevention Research Center, Department of Medicine and Department of Health Research and Policy, Stanford University School of Medicine, Stanford, California, United States of America
Center for Health Policy and Center for Primary Care and Outcomes Research, Stanford University School of Medicine, Stanford, California, United States of America
Veterans Affairs Palo Alto Health Care System, Stanford, California, United States of America
JI is a member of the PLoS Medicine Editorial Board. The authors have declared that no other competing interests exist.
Conceived and designed the experiments: JIAG. Analyzed the data: JI AG. Wrote the first draft: JI. Contributed to the writing of the manuscript: JI AG. ICMJE criteria for authorship read and met: JI AG. Agree with the manuscript's results and conclusions: JI AG.