About the Authors

Audrey R. Tyrka

Audrey_Tyrka@Brown.edu

Affiliations Laboratory for Clinical Neuroscience, Mood Disorders Research Program, Butler Hospital, Providence, Rhode Island, United States of America, Department of Psychiatry and Human Behavior, Brown Medical School, Providence, Rhode Island, United States of America

Lawrence H. Price

Affiliations Laboratory for Clinical Neuroscience, Mood Disorders Research Program, Butler Hospital, Providence, Rhode Island, United States of America, Department of Psychiatry and Human Behavior, Brown Medical School, Providence, Rhode Island, United States of America

Carmen Marsit

Affiliation Department of Pharmacology and Toxicology, Department of Community and Family Medicine, Dartmouth Medical School, Hanover, New Hampshire, United States of America

Oakland C. Walters

Affiliation Laboratory for Clinical Neuroscience, Mood Disorders Research Program, Butler Hospital, Providence, Rhode Island, United States of America

Linda L. Carpenter

Affiliations Laboratory for Clinical Neuroscience, Mood Disorders Research Program, Butler Hospital, Providence, Rhode Island, United States of America, Department of Psychiatry and Human Behavior, Brown Medical School, Providence, Rhode Island, United States of America

Competing Interests

The authors have read the journal's policy and report the following interests: In the last three years, Dr. Tyrka, Dr. Carpenter, and Dr. Price have received research support from the National Institutes of Mental Health, NARSAD, UCB Pharma, Sepracor, Cyberonics, the Department of Defense, Medtronic, Neuronetics, and NeoSync. Dr. Tyrka received honoraria for continuing medical education from Lundbeck and Takeda. Dr. Price received speaker honoraria from MD Conferences/Psychiatry Review Course and served as a paid consultant to Gerson Lehrman, Wiley, Springer, Qatar National Research Fund, Alberta Heritage Foundation for Medical Research, Abbott, and AstraZeneca. Dr. Carpenter served as a paid consultant to Abbott, Cyberonics, Novartis, Wyeth, AstraZenica, and Neuronetics, on the speakers bureau for Neuronetics, and received honoraria for continuing medical education from AstraZenica. Dr. Marsit and Oakland Walters report no biomedical financial interests. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ART LHP CM LLC. Performed the experiments: ART LHP LLC. Analyzed the data: ART OCW. Contributed reagents/materials/analysis tools: CM. Wrote the paper: ART LHP LCC OCW CM. Performed the methylation quanticiation: CM.