The Massachusetts Medical Society owns and publishes The New England Journal of Medicine, the most widely read and cited medical journal in the world. The New England Journal of Medicine is also the oldest continuously published and circulating medical journal in the world and has an impact factor of 91.2, the highest among all the medical journals in the world. It also publishes Journal Watch, a group of professional newsletters.[2][non-primary source needed] NEJM Journal Watch publishes the following topics:
In addition to its publishing activities, the key activities of the MMS include medical education for physicians, public health education for physicians and the public, legislative, and regulatory advocacy for physicians, and patients, and health policy research.
^*Ames, Nathaniel (1998). Hanson, Robert Brand Hanson (ed.). The Diary of Dr. Nathaniel Ames of Dedham, Massachusetts, 1758-1822. Picton Press. p. 113-4.