Before revision: Widely acknowledged as a landmark piece of public health research, it was initiated by Benjamin G. Ferris, Jr at Harvard School of Public Health and carried out by Harvard's Douglas Dockery, C. Arden Pope of Brigham Young University ; Ferris himself, Frank E. Speizer, and four other collaborators published the study in the New England Journal of Medicine in 1993.
After revision: Widely acknowledged as a landmark piece of public health research, it was initiated by Benjamin G. Ferris, Jr at Harvard School of Public Health and carried out by Harvard's Douglas Dockery, C. Arden Pope of Brigham Young University , Ferris himself, Frank E. Speizer, and four other collaborators , and published in the New England Journal of Medicine in 1993.