NEJM Group brings together the people and products that have made the New England Journal of Medicine, NEJM Journal Watch, NEJM Knowledge+, and NEJM Catalyst, leaders in providing the medical knowledge health care professionals need to deliver the best patient care. The goal of NEJM Group is to meet the rapidly growing demand for essential medical information and to disseminate that content in new ways to a broader global health care community than ever before. Our publications reach health care professionals around the globe — making connections between clinical science and clinical practice that advance medical knowledge, health care delivery, and patient outcomes. NEJM Group is a division of the Massachusetts Medical Society. Follow us on Twitter: @NEJMGroup.