Evidence Synthesis of Observational Studies in Environmental Health: Lessons Learned from a Systematic Review on Traffic-Related Air Pollution.

"HEI is indebted to the panel, the consultants to the panel, external peer reviewers, and contract team for their expertise, cooperation, and enthusiasm. We specifically thank J. Fussell, F. Kelly, T. Nawrot, and G. Wellenius as consultants to the panel, and B. Brunekreef for chairing the peer review process. We also would like to thank M. Kutlar Joss and R. Kappeler for literature searches and data extraction. In addition, we would like to thank A. da Silveira Fleck, P. Haddad, L. Hoffmann, L. Stucki, M. Sadoine, Z. Roth, and E. Wüthrich for their help with data extraction. We would like to thank the following HEI Science Staff for their contribution: A. Patton, D. Crouse, E. van Vliet, M. Ondras, E. Tanner, D. Greenbaum, R. O’Keefe, R. Shaikh, and A van Erp. F. W. L. is employed by Sonoma Technology Inc. All panel members served as consultants, paid by the Health Effects Institute, on the research herein."

"Research described in this article was conducted under contract to the HEI, an organization jointly funded by the United States Environmental Protection Agency (assistance award no. CR-83998101) and certain motor vehicle and engine manufacturers. The views expressed in this article are those of the authors and do not necessarily reflect the views of the Health Effects Institute or its sponsors."