PubMed Central (PMC) is a free digital archive of biomedical and life sciences journal literature. It is developed and managed by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM).
The New England Journal of Medicine (NEJM) is a weekly general medical journal that publishes new medical research findings, review articles, and editorial opinion on a wide variety of topics of importance to biomedical science and clinical...