Author Contributions: Dr Cohen had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Cohen, Casselbrant, Li-Korotky, Epel, Doyle.
Acquisition of data: Cohen, Turner, Casselbrant, Li-Korotky, Doyle.
Analysis and interpretation of data: Cohen, Janicki-Deverts, Epel, Doyle.
Drafting of the manuscript: Cohen, Janicki-Deverts, Casselbrant, Epel, Doyle.
Critical revision of the manuscript for important intellectual content: Janicki-Deverts, Turner, Li-Korotky, Doyle.
Statistical analysis: Cohen, Janicki-Deverts.
Obtained funding: Cohen, Casselbrant, Doyle.
Administrative, technical, or material support: Turner, Li-Korotky.
Study supervision: Cohen, Li-Korotky, Doyle.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Turner reported serving as a consultant for, and receiving grants/grants pending from, Janssen Research and Development. Dr Epel reported that she is a cofounder of, and holds stock or stock options in, Telomere Health Inc, a telomere measurement company. No other authors reported disclosures.
Funding/Support: This research was supported by the National Center for Complementary and Alternative Medicine (AT006694) and the National Institute of Allergy and Infectious Diseases (AI066367) and through supplemental support from the John D. and Catherine T. MacArthur Foundation's Research Network on Social Economic Status and Health, the Eberly Foundation, the Hamburg Fellowship, and National Institutes of Health funding to the University of Pittsburgh Clinical and Translational Science Institute (UL1 RR024153 and UL1TR000005).
Role of the Sponsor: None of the funders had any role in the design and conduct of the study; the collection, management, analysis, and interpretation of the data; or the preparation, review, or approval of the manuscript.
Additional Contributions: We are indebted to Ellen Conser, MA (Carnegie Mellon University [CMU]), James Seroky, MA, Julie Banks, BS (both Pittsburgh Children's Hospital), and Wesley Barnhart, BS (formerly CMU), for their assistance in data collection and to Cathy (Chia Chow) Lo, MS, and Allison Cullen Doyle, MS (both Pittsburgh Children's Hospital), for their assistance in conducting assays; we also thank Judith A. Woodfolk, MBChB, PhD (University of Virginia Health Sciences Center), for her comments on an early draft. All but Dr Woodfolk received payment for their participation.