MEDICAL SCIENCES Correction for “B vitamins attenuate the epigenetic effects of ambient fine particles in a pilot human intervention trial,” by Jia Zhong, Oskar Karlsson, Guan Wang, Jun Li, Yichen Guo, Xinyi Lin, Michele Zemplenyi, Marco Sanchez-Guerra, Letizia Trevisi, Bruce Urch, Mary Speck, Liming Liang, Brent A. Coull, Petros Koutrakis, Frances Silverman, Diane R. Gold, Tangchun Wu, and Andrea A. Baccarelli, which appeared in issue 13, March 28, 2017, of Proc Natl Acad Sci USA (114:3503–3508; first published March 13, 2017; 10.1073/pnas.1618545114).
The authors note that the following statement should be added to the Acknowledgments: “This publication was supported in part by United States Environmental Protection Agency (USEPA) Grant RD-83479801. Its contents are solely the responsibility of the grantee and do not necessarily represent the official views of the USEPA. Further, USEPA does not endorse the purchase of any commercial products or services mentioned in the paper.”